Hello again BK,
I didn't mark my previous question as private than how come I can't read it?
Okay anyways, let's go!
1. Serval vs Caracal
2. Gray Wolf vs Clouded Leopard
3. Cougar vs Grevy's Zebra
4. Bull Shark vs Nile croc
5. Indian mongoose vs American Mink
6. American Alligator vs Indian Gharial
7. Beech Marten vs Southern Quoll
8. Aseel gamefowl vs Turkey
9. Aseel gamefowl vs Western Quoll
10. Main event: Great white shark vs Southern Elephant seal
1. Serval vs Caracal: The caracal will weigh about the same as the serval. The caracal is a stronger, more robustly-built cat than the serval. Caracals are capable of taking larger prey as well (servals usually hunt rodents & birds). A serval is built for amazing agility, leaping ability, & coordination, but these attributes serve it much better hunting than fighting. Caracal wins.
2. Gray Wolf vs Clouded Leopard: The gray wolf will weigh over 2 1/2 times more than the clouded leopard. Clouded leopards are quick & very agile, and have upper canines as long as matchsticks. Gray wolves have strong bites & great endurance. The clouded leopard has the ability to injure the wolf with its long teeth & sharp claws, but it won't have a way to effectively repel the big bite of the much larger animal on most occasions. Gray wolf wins.
3. Cougar vs Grevy's Zebra: The zebra can weigh over 4 times as much as a cougar. Cougars are agile, explosive, athletic, & experts at tackling large cervids. They have sharp claws to grip/swipe, and are adept at getting in position to deliver a finishing bite (usually to the throat, neck, or snout). Zebras are battle-tested against lions & leopards, and sometimes have success in repelling their attacks (with strong kicks & bites). A cougar can certainly overpower a zebra with an ambush, but will have a rough time tackling one face-to-face. An aggressive zebra can be a handful for a lioness, and a lioness weighs almost double the cougar's weight. Edge to Grevy's zebra.
4. Bull Shark vs Nile croc: The Nile crocodile will weigh over twice as much as the bull shark. The bull shark will have greater mobility in open water, and will have the means to breach some areas on the crocodile's armored hide (with large jaws full of razor-sharp teeth). However, the Nile crocodile will be much larger, and its bite can pose problems for the shark. The jaws of a crocodilian aren't as effective against aquatic animals as they are against a herbivore at the water's edge, but they can still be a major asset. I typically favor a shark over a crocodile at parity, but not against one over twice its weight. Nile crocodile wins.
5. Indian mongoose vs American Mink: The animals will weigh close to the same weight. Both are skilled predators, and both have good lateral movement. It will be a bite vs bite affair, and both have similar assets & abilities. The mink has a more flexible body, which may help it to vary its attack. Slight edge to the mink.
6. American Alligator vs Indian Gharial: These animals will typically be similar in weight. Gharials have slender snouts & small, sharp teeth designed to capture fish. They don't have an effective means to injure an American alligator or another large animal. The gharial's jaws are much weaker than a alligator's, and aren't suitable for grabbing & holding large, struggling prey. The alligator has a very strong bite force & regularly preys on large animals. American alligator wins.
7. Beech Marten vs Southern Quoll: The Southern spotted-tail quoll will have a decent weight advantage over the beech marten. Both are capable predators with good mobility & effective bites, but the quoll has one of the strongest bite forces (pound-for-pound) among mammals. The marten has a more flexible body, but the quoll has a stouter build. Edge to quoll.
8. Aseel gamefowl vs Turkey: The turkey will weigh almost twice as much as the Aseel gamefowl. Aseel gamefowls can cause injury with their kicks, and can be aggressive & relentless. A turkey will kick & peck in a conflict, but it's not as experienced at fighting as the gamefowl (which is bred to do so). Aseel gamefowl wins.
9. Aseel gamefowl vs Western Quoll: The Aseel gamefowl can weigh 3 times as much as a Western quoll. Aseel gamefowls can cause injury with their kicks, and can be aggressive & relentless. Quolls are quick predators with a strong bite force, but don't have the leaping ability needed to clear the kicks of the bird. The quoll can win if it darts in quickly & bites the gamefowl in a vulnerable area, but the combative bird will repel it more times than not. Aseel gamefowl wins.
10. Main event: Great white shark vs Southern Elephant seal: The elephant seal will weigh over 60% more than the great white shark. Elephant seals are massive pinnipeds that are capable of injuring a shark with their bite, but it would take an accumulation of them to slow down a great white. The bite of a great white shark can create large avulsions in an elephant seal's hide and induce rapid blood loss. Elephant seals aren't as maneuverable as smaller seals are, and one won't be able to avoid a serious bite from an attacking great white shark. The shark will find an opportunity to land a big bite, then retreat while the elephant seal expires. The shark won't succeed every time against this behemoth, but should prevail more times than not. Great white shark wins.
* Not sure why the other answers aren't showing up, but I'll repost them here for you:
1. Sindhi Aseel vs Caracal: A caracal can weigh as much as 3 Sindhi Aseel gamefowls. Aseel gamefowls can cause injury with their kicks (kind of like a mini-cassowary), but a caracal will be too formidable for the bird. Caracals are quick & agile, and can overpower prey items much larger than an Aseel gamefowl. The caracal will pounce upon the gamefowl, and will use its claws & teeth to dispatch the bird. The Aseel gamefowl won't be able to prevent the caracal from overtaking it. The caracal is an athletic cat with great leaping ability, and will move too explosively for the Sindhi Aseel gamefowl to react to. Caracal wins.
2. Savannah F1 vs German Shepherd: A savannah cat (cross between a serval & a domestic cat) can weigh about 1/3 the weight of a German Shepherd. Savannah cats are extremely quick, agile, & are great leapers. German Shepherds are intelligent & trainable, and are commonly used by the military & the police. The savannah cat has sharp claws & teeth, but will have a great deal of trouble stopping the big bite of an attacking German shepherd. Dogs typically have much greater stamina than cats, but the battle won't last long enough for that to become a factor. The German Shepherd is simply too big. German Shepherd wins.
3. Hippopotamus vs Grizzly Bear: The hippopotamus will weigh 4-6 times more than a grizzly bear. Hippos have huge jaws armed with sharp-edged canines (and forward-pointing incisors), and can be very aggressive & territorial at the water's edge. Hippos aren't as formidable out on land as they are by the river, but can still be dangerous adversaries due to their large size & weaponry. Grizzly bears are strong, muscular mammals with great durability & endurance. They have strong bites & long claws, and can use their forelimbs to manipulate & control opponents in a fight. A grizzly bear can potentially injure a hippopotamus, but it's not large enough to compete with it effectively on most occasions. The grizzly bear doesn't have enough lateral movement to avoid getting chomped by the hippo's jaws (which can cause devastating injuries), and won't be able to dish out enough offense to overpower the larger animal before this occurs. A grizzly bear might be able to deter an uninterested hippo with a few paw swipes if they're away from the water's edge, but won't have enough ammunition to stop one determined to attack. The hippo is simply too big. Hippopotamus wins.
5. Short-faced bear vs Modern Hippopotamus: There are 2 main types of short-faced bears. Arctodus (North American short-faced bear) was believed to have weighed about 1000kg, and Arctotherium (South American short-faced bear) was believed to have weighed almost 1600kg. Arctodus would have a better chance against a hippopotamus than a grizzly bear would, but will still run into the same problems when encountering one (not mobile enough to avoid the hippo's bite/can't dish out enough damage with its paws & claws before it receives a serious bite). The hippo will weigh anywhere from almost twice as much as Arctodus to almost 3 times as much, and will simply be too big on most occasions. Here is an earlier answer to the Arctotherium vs hippo matchup: The hippopotamus will weigh about 70% more than the South American short-faced bear (Arctotherium), but will only reach about 3/4th its shoulder height. Hippopotamuses have large jaws with imposing canines, and these sharp-edged teeth can cause serious wounds to any opponent. Hippos can be very aggressive & territorial in or near water, but aren't as comfortable when completely on land. Although they are capable of quick bursts of speed on land, they don't have the greatest mobility or stamina there. Arctotherium is believed to be the largest bear ever, and may have been closely related to the sloth bear. All bears have great endurance & durability, and Arctotherium was likely capable of causing a lot of damage with its jaws & swinging paws. The hippo would likely have been able to land its bite on Arctotherium throughout the fight (bears don't have the best lateral movement; especially large ones), but it would take more than one to take out the giant bear. The hippopotamus would be too strong to hold in place initially, but Arctotherium would have some success with its paw swipes until the hippo fatigued. This battle depends a lot on the bear's ability to avoid receiving a serious bite while mounting an effective offense with its jaws & claws. I would favor a hippopotamus at the water's edge, but the Arctotherium would have the edge on dry land. Close to 50/50. So the hippo wins against Arctodus, but gives an even fight to Arctotherium.
6. Martial eagle vs Golden eagle: These birds will weigh about the same. The martial eagle is the largest eagle in Africa, and is the aerial terror of the savannahs. It can take large prey (even servals & jackals need to be wary), and has very strong talons (can break a man's wrist). The golden eagle is an aggressive, sometimes combative bird that also takes reasonably large prey & has strong talons. It commonly battles other bird-of-prey species, and steals food from them on occasion (and is a formidable presence at a carcass). Both of these birds have similar attributes, and a battle between them would be quite close. Slight edge to the martial eagle.
7. Indian mongoose vs Least weasel: The Indian mongoose can weigh up to 7 times as much as a least weasel. The least weasel can tackle prey much larger than itself (and kills with a bite to the back of the skull), but these prey items aren't as formidable as an Indian mongoose. Indian mongooses are quick & agile, and sometimes overpower cobras by dodging their strikes & seizing them by the back of the neck with their jaws. These animals have relatively similar attributes & abilities, but the mongoose is simply too big. Indian mongoose wins.
8. False gharial vs Bull Shark: These animals can be similar in weight, but the physiology of each animal is a more important factor with this particular matchup. Gharials have slender snouts & small, sharp teeth designed to capture fish. They don't have the same means as, let's say, a Nile crocodile to injure another large animal. The false gharial's jaws are much weaker than a crocodile's, and aren't suitable for grabbing & holding large, struggling prey. The bull shark has a strong bite with razor-sharp teeth, and will have an overall maneuverability advantage over the gharial. The gharial won't have an effective means to injure the bull shark, but the bull shark can injure the gharial (on the less-armored areas of its body) with its bite. Bull shark wins.
9. Pit bull vs Iberian Lynx: The American pit bull terrier will weigh twice as much as the Iberian lynx. APBTs are among the best canine combatants, and have great strength, athleticism, durability, & endurance. A game-bred & experienced one is an aggressive & relentless foe. Iberian lynxes are quick, agile, & well-armed (jaws & claws), but one will have trouble dealing with the style of attack the larger canid will employ. The ABPT will likely rush in immediately & latch onto the lynx (head & face area), and use its muscular body to violently shake its head to initiate damage to the felid. The lynx can inflict wounds with its claws (especially its kicking back claws), but it won't have enough effect on the APBT before it succumbs to the dog's offense. A large Iberian lynx would have a decent chance to repel a regular pet APBT with a strong defense, but will still have problems winning a serious battle. Pit bull wins.
10. Main event: Sindhi Aseel gamefowl vs Golden eagle: These birds will weigh about the same. The maneuverability of the golden eagle in flight will give it a definite advantage over the more terrestrial gamefowl, and it should be able to win if it attacks from the air (even if the gamefowl sees it coming). The strong talons of the golden eagle can easily dispatch the Sindhi Aseel gamefowl. If the golden eagle approached the gamefowl by walking toward it (which would not be normal behavior for the eagle), it would run the risk of being kicked, and would probably lose the encounter (unless it got close enough to get a grip with its powerful talons). The Sindhi Aseel gamefowl can be a handful for a similar-sized animal that approaches along the ground, but the aerial attack of the golden eagle will be too much. Golden eagle wins.