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Charles Savoie wrote at 2006-12-08 07:25:14
The jaguar has the strongest jaw muscles of the felids, and has punctured measurably into a bowling ball.  The jaguar has very large rounded profile on each cheek due to oversize jaw muscles.  The largest wolves outgrow the largest hyenas and have a bite to be considered.  The wolverine, at 60 pounds maximum, is said to have stronger bite than the wolf.  The wolverine "crushes bones like straw."  


Deziel C. wrote at 2007-01-31 00:03:27
A pit bull has around 20,000 lbs/sq.in, just a bit less than Hyenas. I believe the Great White Shark has the strongest bite pressure in the marine world, however the tiger shark seems to have the most devastating bite due to it's sharp and jagged style teeth alignment, it's like sticking your leg into a giant paper shredder.


owen wrote at 2007-08-09 12:50:21
No actually a Tasmanian devil has the largest bit pressure per size of the animal . A crocodile has the largest bite pressure every recorded on a living animal .


Billy wrote at 2007-12-11 15:41:49
That is actually incorrect.  The hyena is one of the strongest,  but the crocodile is far stronger.  As for sharks, they don't really have that much power.  Their teeth do most of the damage.


Flex wrote at 2008-04-16 17:33:24
The land animal with the strongest jaw power is the Hyaena at up to 1000 psi, but for marine animals, its going to have to be the crocodile at 5,000 psi!!


max wrote at 2008-05-02 19:43:42
actually, hyena's having the strongest bite is provin to be a myth many more animals have stronger bites to the proportion of thier body including a tazmanian devil but the hyena does have an extremely powerful bite


john wrote at 2008-06-23 00:38:52
Actually, the hyena does not have the strongest bite, the Nile crocodile has the strongest bite. Furthermore, both the jaguar and the Tasmanian devil have stronger bites than the hyena.


Bob wrote at 2008-07-11 18:19:19
The National Geographic's Dr. Brady Barr conducted bite tests and found that  an 18 foot Nile croc had a bite pressure/sq inch of over 6000 lbs.  The hyenas only bite at 1000 lbs/sq in.  White sharks and lions bite the same at 600 lbs/ sq in.


Ash wrote at 2008-10-30 20:45:54
the alligator snapping turtle has the strongest pound per square inch bite. Hyenas have the strongest jaws and probably the second strongest bite by pressure


Zill wrote at 2008-11-10 01:52:22
Actually, I dont wanna be the jack ass, but the strongest bite force of any living animal is a crocodillian with a bite force of over 2500 lbs.


ministan wrote at 2009-01-31 03:40:39
actually Ash, the alligator snapping turtle has the second most powerful jaw pressure in the world at 1500psi


Dre wrote at 2009-03-24 22:34:58
Hi!

Actually the Hyena is 2nd strongest.

The Tazmanian Devil has a jaw strength of 5100 psi.

It simply eats a whole animal without leaving evidences chewing bones and teeths.


jf11235813 wrote at 2009-04-22 22:05:25
just to set the record straight,

i own and breed alligator snappers and they do indeed have the second strongest jaw in the world at 1500 psi and the number 1 is the Nile crocodile at 5000 lbs. however, the Nile croc's jaw pressure is only applicable to closing its mouth whereas the alligator snapper's jaw pressure is the same in all functions of the jaw.


baricho wrote at 2009-05-02 15:40:57
the shark is no the strongest aquatic....it look likea strong jaw because people se the damage that it cause...but what cause the damage is the speed..they usally atack coming in a high speed....

i the the crocs have a stronger jaw than the shark..but is a reptile




Asher wrote at 2009-06-20 22:12:40
Scientist's have finally found out the great white shark's bit pressure in the world as much as 5400 psi.


Tooth wrote at 2009-06-20 22:20:08
Hello



Actually the strongest animal in the world that ever existed is not a dinosaur it is or was... a shark a dangerous shark by the name of megaladon also known as big tooth it would crush 24 tons! It weighed a lot, Yes I agree with you Asher that shark is the strongest, Go check!




carl wrote at 2009-09-22 14:06:01
well for an animals size a rat has the most jaw power,for its size a rats jaws has the power of a crock  


war wrote at 2009-10-05 05:16:52
The nile crocodile has a bite of around 5300 psi (give or take) the second is the alligator snapping turtle with around 1500 psi (give or take). its not a hyena, its not a wolverine, its not the tasmanian devil.


Rich wrote at 2009-11-09 20:50:35
The correct answer is a croc. The highest recorded was 6,000lbs by a 18ft nile croc. Now if consider it a land animal is another question. As far as animals that just stay on land a Hyeana is the answer. With around a 1,000.


Victor7771 wrote at 2010-01-09 20:52:26
The bite of a crocodile is 5 times as srtong as that of

a hyena making it the strngest bite. But compared to size

the hyena's bite is quite strong  


Tyler28 wrote at 2010-01-24 14:39:48
actually the wegalodon has the biggest jaw power of over 25 tons and one has been found that may have only died 126 years ago and yes she had a kid . the scientist could tell by looking at its lady parts so maybe there are still some out there in extreme deeps just like the colossal squid are. calloused squid still show up on shore. so do the megalodons teeth. sharks always shed rows of teeth. the megaladon is no exception. so could it still be out there.  if so this would prove megaladon has the strongest bite today.


MikenIke wrote at 2010-04-04 20:15:41
to put an end to this the AMERICAN ALLIGATOR has the strongest bite force, but I'm sure the Nile Crocodile would be right there with it, the alligator snapping turtle is second, the hyena has the strongest jaw but not bite, and as per bit to size ratio is the Tasmanian devil


The Smart guy wrote at 2010-05-11 01:13:58
Excuse me sir, check your accuracies. A saltwater crocodile produce up to 5 tons of bite force and out bites even the alligator. A shark has much weaker jaws. If we talk about strongest terrestrial bite force- it is the jaguar. Thank you for listening, go reed a book!


safari guide wrote at 2010-07-14 00:01:47
seriously people, commmon.  anyone that says anything other than the crocodile is clearly not well informed enough to answer here.  the crocodile is larger and has a more narrow snout than the alligator which both combine to make their bite much more powerfull than the alligator, or any other member of the crocodilian family.  as far as people even mentioning animals like dogs and cats, i have one question for you; serioulsy?


ozelotl wrote at 2010-07-18 04:42:40
The Tasmanian devil has the strongest bite force for a mammal. Second place is the Jaguar. The strongest bite force period is the great white shark.


Califitness4Life wrote at 2010-07-26 12:27:09
Crocodiles and Alligators are the undisputed king of bite force pressure ranging from about 3000 to 6000lbs of pressure. After these animals it would be animals such as Hippos, Polar/Grizzly bears, Siberian tigers and the alligator Snapping turtle these animals can bite in the range of about 1200 to 1800 lbs of pressure. Now onto the smaller animals such as the jaguar or the spotted Hyena we are talking about 900 to 1100 pounds of pressure. These are the top animals as far as bite force is concerned.


bob wrote at 2010-08-20 10:27:12
The Hippo has the strongest bite pressure for land mammals. 3000Lb per square inch.The Hyena has the strongest compared to body size ratio. 1100lbs with a 100lb body weight. Male Rotweillers have 320lb per square inch,humans have 150.



Hippos have been known to bite 15 foot crocodiles

in half. They also kill more humans per year than any other animal. mostly by tipping boats and crushing or drowning the occupants.


Kawl Q wrote at 2010-08-25 06:37:44
“Pit Bulls have more bite pressure per square inch (PSI) than any

other breed.” This is absolutely false.



Tests that have been done comparing the bite pressure of several

breeds showed pressure PSI (per square inch) to be considerably lower

than some wild estimates that have been made. Testing has shown that

the domestic dog averages about 320 lbs of pressure per square inch.

Recently Dr. Brady Barr of National Geographic conducted a comparative

test between a Pit Bull, a Rottweiler, and a German Shepherd. The Pit

Bull had the LOWEST PSI OF THE THREE.



The highest pressure recorded from the Pit Bull was 235 lbs PSI. The

highest from the GSD was 238, and the highest from the Rott was 328.

Dr. Barr states that as far as he knows, the PSI tested in the Rott is the

highest on record for any domestic canine.



What happened to the supposed 10,000 pounds PSI pressure that the

breed supposedly has??? It's a MYTH, pure and simple.



THERE HAVE NEVER been ANY TESTS done to prove that the APBT has

bite pressure PSI higher than what has been tested by Dr. Barr.




Dude who has his facts right wrote at 2010-09-12 10:33:33
Actually, the largest bite force on record is the newly discovered Predator X, is it not? With a bite force of 33,000 lbs. The Cretaceous T.Rex holds the record for the largest bite force on land with an estimated 8000 lbs and a U-shaped jaw built to withstant impact from penetrating bone. The Nile Crocodile comes in after that with 6000 lbs, strongest today in the world.



And if i'm not mistaken, for you Shark fans, the Great White isn't supposed to have much of a higher bite force than a human being!  



Tigers have also been known to exert 1,050 lbs and weren't Hyena's wrongly estimated as 100 lbs?



Either way:



Predator X - 33,000

Tyrannosaurus Rex - 8000

Nile Crocodile - 6000

Alligator - 3000

Tiger - 1,050

Lion - 699


DeanS wrote at 2010-09-13 00:33:43
The top 5 bites from land animals (based on damage to bones, etc)



spotted hyena

jaguar

timber wolf

African lion

leopard



The top 5 dog bites



chow chow

rottweiler

dogo argentino

pitbull (the smaller legit pit, not staffies)

German shepherd



The top 5 aquatic bites



Great white shark

Saltwater crocodile

Nile Crocodile

Giant/Colossal squid*

Humboldt squid*



You cannot discount a beak that can go through any bone!  


Astrophile wrote at 2010-10-31 19:23:44
  ACTUALLY, the strongest "bite" in the Universe is...a black hole, it tears holes in the fabric of spacetime. The black hole at the center of our galaxy (Sag A*) would make a light snack of our Solar System; we wouldn't even be a remnant tidbit left in it's teeth.

  Seriously though, all of these respondents seem to be barely touching on the key issues: jaw strength vs. how much damage the teeth do, the biting tactics of the animal (e.g alligator's roll), lbs. per SQUARE INCH vs. total bite pressure. Even the structure of their jaws can modify the bite, and therefore alter the effects. These are all major distinctions, and key factors in the consequent damage. Besides, mechanical shearing is only one way of bringing prey down. I'd take my chances with most of these animals before I allowed myself to be bitten by a komodo -40,60, or more different kinds of bacteria that can kill days later.


TokinNchokin wrote at 2010-11-02 04:16:26
well everyone seems to have the correct answer despite them all being different lol.. The common rat was the correct answer for land mammal (Not Extinct) when using pound for pound weight to bite pressure as the main variable.. There are many variables not taken into account here also, for example, when standing still a male grey wolf has an impressive 500psi bite but if the wolf is lunging foward when biting then the force jumps right up to 1400psi.. And as for "the shark doesnt have much jaw power" you have got to be kidding.. Tests done with life like test-dummies show that in a titaniium chainmail suit, the teeth of the great white dont penetrate, showing us that the suit works up to it purpose but when each dummy was stripped off they found the shark had completely crushed the dummies entire torso. Without the protective suit the great white shark can dismember a human body just testing to see what it is, by the time its realised your a bony human and not a fat, juicy seal its already often too late.. And as for dogs the staffordshire bull terrier, the bull terrier, the rottweiler, the pittbull and the other mastiff breeds all hold more power than a wolf in the jaws.. perhaps even more interesting is that some human males have up to 200psi in there jaws.. Finally, the most important variables in raw biting force is the teeth.. Its the reason a jaguar can break a turtle shell & why you or my can only break our own teeth.. And size, length, width and weight of the head, neck, jaws, and upper body.  Speed of closure and angle of approach when biting are all important variables... Dont you just love physics!!! LOL


Jil wrote at 2011-01-12 06:08:42
Tokin:

I read through all of the answers and at the same time am watching Brady Barr testing bite pressure of sharks. My friend and I have had a long going arguement of which creature had a stronger bite psi. One says Alligator the other says Great White. Its been going on so long we cant recall who claimed what. But It has always been an issue of mine that there are just too many variables to accurately measure. A zoo hippo biting down on a neter can't be the same as one protecting its baby from others hippos or crocs. A pitbull lunging at anything has to be stronger then just waiting for him to bite down.  The great white shark does a lot of investigating bites before a full pressure attack where it seems that the bull shark seems to go at it fullforce straight in. Barr has on the show a Miami scientist who has designed a pretty humane study of anesthetizing (sp?) a shark and using electrodes to force maximum muscle control. I know that it still doesnt account for a lot of the physics, but seems that it could definately standardize all of these conflicts. Its good to know that a mouse has supposedly the strongest bpsi, but .... its not nearly as impressive as a Great White coming out of the depth of no where; exploding out of the water at 50 g's; and landing a strong bite psi...not to mention the sheer damage done by their teeth. Its an amazing sight to see.  

I dont bother with the assumations of the extinct animals as jaw size and shape dont tell enough of the muscle or mechanics. Thank you for pointing out the multi dynamics that go into the actual bite and how impossible it is to be entirely accurate.

BTW...I got bit by a miniature goat (no top front teeth), and once by a horse...I can imagine anything stronger. Imagine if crocodiles didnt have sharp teeth? just grinders like a horse.


Dr. Chive wrote at 2011-04-22 03:53:40
My wife's jaw is pretty powerful, she seems to be unable to keep it from yapping.



Look at the basic shape of each animal's jaws and musculature. The crocodile may push 5k psi nearest the jaw hinge but at the far end of it's snout it may be markedly less.



Sharks do not have extremely strong jaws. They need not have them since they have an endless supply of razor teeth for thrashing.



Jaguars kill prey with a single bite to the skull or neck.



You all need to cite references (I can't right now since I'm on my mobile).



I can't imagine even a crocodile breaking a human femur with a single bite (without deathroll). Wet, living bone is somewhat different from dead and also the surrounding muscles, skin and tissue help to spread the load. Watch any nat geo documentary on crocodiles. They very often bite an animal's leg but I've never seen one break from the pressure alone. Bones such as the fibula and radius/ulna could be broken by pressure but that is because they can be squeezed together.



Does anyone know the psi needed to crack long-bone? I imagine it's amazingly high even without the skin and muscle attached.



Humans have a decent bite at about 200-some odd psi.



Skulls are relatively easy to crack, even with bare hands.



I don't think it's a matter of crushing a long-bone, it's the overall process of bite-thrash-roll-cut-shred etc that causes the bone to weaken and then break, not break as a result of the bite pressure alone.



Bone is hollow and the nature of that design makes it stronger than solid material because it's made of millions of randomized cells as opposed to something crystalline. I can't think of a great example but ice comes to mind. Some bones are triangular-ish in cross section which is one of the strongest "shapes" we know of.



Hopefully I didn't pull a major boner on this one. Drop me a line and we can "chew" the fat.  


Dr. Chive wrote at 2011-04-22 03:53:47
My wife's jaw is pretty powerful, she seems to be unable to keep it from yapping.



Look at the basic shape of each animal's jaws and musculature. The crocodile may push 5k psi nearest the jaw hinge but at the far end of it's snout it may be markedly less.



Sharks do not have extremely strong jaws. They need not have them since they have an endless supply of razor teeth for thrashing.



Jaguars kill prey with a single bite to the skull or neck.



You all need to cite references (I can't right now since I'm on my mobile).



I can't imagine even a crocodile breaking a human femur with a single bite (without deathroll). Wet, living bone is somewhat different from dead and also the surrounding muscles, skin and tissue help to spread the load. Watch any nat geo documentary on crocodiles. They very often bite an animal's leg but I've never seen one break from the pressure alone. Bones such as the fibula and radius/ulna could be broken by pressure but that is because they can be squeezed together.



Does anyone know the psi needed to crack long-bone? I imagine it's amazingly high even without the skin and muscle attached.



Humans have a decent bite at about 200-some odd psi.



Skulls are relatively easy to crack, even with bare hands.



I don't think it's a matter of crushing a long-bone, it's the overall process of bite-thrash-roll-cut-shred etc that causes the bone to weaken and then break, not break as a result of the bite pressure alone.



Bone is hollow and the nature of that design makes it stronger than solid material because it's made of millions of randomized cells as opposed to something crystalline. I can't think of a great example but ice comes to mind. Some bones are triangular-ish in cross section which is one of the strongest "shapes" we know of.



Hopefully I didn't pull a major boner on this one. Drop me a line and we can "chew" the fat.  


Befuddled australian. wrote at 2011-04-29 17:38:38
The TASmanian (not taz like the cartoon character) devil has jaw muscles that allow it to bite with a force of 553 newtons (or for the newton impaired 1220psi) making it the land mammal with the strongest bite (I know this from experience). some kind of crocodile (probably the nile croc everyone keeps going on about) has the strongest bite of any LIVING creature at 22kN (kilonewtons=newtonsX1,000). For  those who don't like the metric system that's about 5,000 pounds FOR THE WHOLE MOUTH. i have no idea how much that is in psi or whatever so i'll leave that up to the mathmeticians. All in all i do wonder why you are all fighting over animal bite strength when you could be either out working or having a life. enjoy this info or not. Bye.


grsvd wrote at 2012-01-03 03:00:19
-First off a Tasmanian Devil may have ~5000 psi of bite force and a hyena only has 1000 psi, but the hyena has a stronger bite overall. Why? It weighs a lot more.



- Nile Crocodile beats American Alligator.  


Joe wrote at 2012-02-03 15:17:35
Deziel C. - Sorry to break the news to you , but you're one of 500 trillion people who has the pit bull's jaw pressure WAY over estimated. It's bite is only a few hundred lbs. p.s.i. with at least two or three other dogs with a stronger bite. 20,000 lbs. p.s.i. would kill a person instantly, and of course they do kill but they have to work a while to do so.


Ace wrote at 2012-03-28 13:04:06
An Australian crocodiles bite pressure is one ton per square inch, and is considered to have a bite pressure exceeding the t-rex.


Ants rule wrote at 2012-06-13 03:05:33
Pound for pound where does an ant 'weigh' in on this?


banjocountry wrote at 2012-08-01 00:09:49
lmao that guy up top said pit bulls bite at 20,000 psi.they only     

bite at 150psi - 200psi and that is only second highest in the dog kingdom the ROT has the highest bite for dogs at 300psi...id have to say the croc has the highest bite EVER bottom line.a hyena has the same bite pressure as a lion tho maybe a higher average actually.but not the highest srry  


Dr. Awesome wrote at 2012-11-15 16:33:10
Wow, pretty much everyone is horribly wrong on this forum...



Some of the answers are just ridiculous (20000psi for a dog, wtf? Not to mention the person who thought a Great White Shark would experience 50g when it left the water at 25mph.



So far as an actual answer goes, I'm fairly convinced that (currently) the strongest bite force in nature goes to the Nile crocodile. There's a lot of speculation regarding Great Whites, and their bite force has been measured at both high and low scores, with the low scored being potentially accounted for by the fact that they 'test' bite i.e. bite without full force in order to determine something about prospective food.


james wrote at 2012-11-24 23:38:48
actually god has the strongest bite force to infinity and beyond!


Kate wrote at 2013-12-21 10:38:27
Strongest jaw and strongest bite are completely different things! Animals use more than muscles to attack and bite ( eg body positioning)


Chemiagar wrote at 2014-02-06 22:23:04
why all of you make guess by your own self? tell me why?  its Nile Crocodile and salt water crocodile.... and then in mammals it is Jaguar then Hyena and Tiger...this is damn fact


Chemiagar wrote at 2014-02-06 22:23:15
why all of you make guess by your own self? tell me why?  its Nile Crocodile and salt water crocodile.... and then in mammals it is Jaguar then Hyena and Tiger...this is damn fact


Chemiagar wrote at 2014-02-06 22:23:22
why all of you make guess by your own self? tell me why?  its Nile Crocodile and salt water crocodile.... and then in mammals it is Jaguar then Hyena and Tiger...this is damn fact


Chemiagar wrote at 2014-02-06 22:23:24
why all of you make guess by your own self? tell me why?  its Nile Crocodile and salt water crocodile.... and then in mammals it is Jaguar then Hyena and Tiger...this is damn fact


Chemiagar wrote at 2014-02-06 22:23:26
why all of you make guess by your own self? tell me why?  its Nile Crocodile and salt water crocodile.... and then in mammals it is Jaguar then Hyena and Tiger...this is damn fact


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