1) 80kg caucasian stephard dog vs 55kg wulf
2) 80kg caucasian stephard dog vs 60kg cougar
3) 80kg caucasian stephard dog vs 3x 15kg dhole
4) 1000kg caffer buffalo vs 800kg female black rhino
5) 800kg moose vs 650kg female caffer buffalo
1) 80kg caucasian stephard dog vs 55kg wulf: This will be a large Caucasian Shepherd dog and an average-sized grey wolf. The Caucasian Shepherd is a large, powerful dog with a broad (but short) muzzle. This thick-furred canine is used as a livestock guardian and has been used in Russian prisons. Caucasian Shepherds can be combative and ferocious. Among the predators the Caucasian Shepherd will defend sheep flocks against is the grey wolf. This dog breed will boldly attack any predator that threatens the sheep (or the shepherd), and is one of the few domestic dogs that can compete with (and potentially kill) a grey wolf. Among domestic canine combatants at absolute weights, the Caucasian Shepherd is near the very top. A grey wolf is a pack hunter, and is not as comfortable in solo conflicts as in one with the help of its pack members. Grey wolves can be wary and aloof, and won't readily engage another animal if the risk is high. A Caucasian Shepherd charging toward a grey wolf lurking near the sheep it protects will likely drive the invader away in a realistic situation. Grey wolves have large heads and powerful jaws, and sometimes engage in confrontations with a variety of dangerous animals (cougars, black bears, wolverines, etc.). The grey wolf has good lateral quickness and solid endurance, and these may likely be advantages over the larger Caucasian Shepherd. The thick layered fur of the Caucasian Shepherd will help protect it from the bites of the grey wolf, but the more agile wolf may be able to land a higher volume of bites. A grey wolf will certainly win at parity, but here it is less than 70% of the dog's weight. Because the Caucasian Shepherd is a capable fighting dog, it will be more than a match for the wolf at these weights. Edge to Caucasian Shepherd dog.
2) 80kg caucasian stephard dog vs 60kg cougar: This cougar will be slightly below average size. Cougars are excellent ambush hunters, and can bring down herbivores much larger than themselves. They kill their prey with a bite to the throat, snout, of the neck. A cougar is extremely athletic and agile, and has amazing leaping ability (can leap from the ground to a point several meters up and jump down to the ground from very high places). This cat is somewhat lanky and long compared to a leopard or a jaguar, but can make very quick and explosive movements when fighting or hunting. Cats have the advantages of paw usage and the presence of claws when compared to a dog, but dogs typically have much better stamina and larger bites on occasion. The Caucasian Shepherd dog will easily be able to drive the cougar away in a realistic situation, but in a serious battle the cougar will be agile and well-armed enough to give the dog a fierce battle. The Caucasian Shepherd dog's only weapon is its bite, and the cougar should be able to use its forelimbs to seize the canid and get into a position that keeps the dog's jaws from landing bites easily. The cougar's claws (especially the back ones) can cause raking injuries to the Caucasian Shepherd, and the cougar should be able to move into a position to land a throat bite on its attacker. This probably won't be a swipe vs bite affair; the cougar will likely try to control the movements of the dog by staying close to it and working for a killing bite to asphyxiate the dog. Even though the cat is smaller, it is better armed and has enough physical advantages (agility, speed, athleticism, ability to fight at a high level for a short amount of time) to prevail in a serious battle. Edge to cougar.
3) 80kg caucasian stephard dog vs 3x 15kg dhole: Dholes (Asiatic wild dog) are small predators that typically hunt in a pack like wolves and African wild dogs do. They can bring down large prey items by surrounding them and landing bites until the victim is worn down. Dholes have great lateral quickness, endurance, and strong bites for their size. The Caucasian Shepherd dog will cause a lot of problems for the attacking dholes. Its thick fur will offer some protection from their bites, and the dog's ability to turn quickly will give it a chance to seize one of the smaller canids in its jaws (which can disable or kill it). Groups of predators that are practiced at hunting together can do amazing things (hence the saying "the whole is greater than the sum of its parts"), but the dhole's ability to divide an adversary's focus won't be profound enough in this situation to make up for the size of the Caucasian Shepherd dog and the danger it poses to the pack. A couple of dholes added to the mix might turn the tide, but this trio will be too small in comparison to the Caucasian Shepherd dog to realistically overcome it. Caucasian Shepherd dog wins.
4) 1000kg caffer buffalo vs 800kg female black rhino: This will be a massive caffer buffalo (they seldom exceed 680kg). Caffer buffalos (Cape buffalos) are powerful bovids that are typically ill-tempered and unpredictable. They have robust bodies and thick curved horns. Caffer buffalos are a very dangerous prey item for lions, and have killed these big cats on occasion. It usually takes a large pride of lions to successfully overpower an adult caffer buffalo. Black rhinoceroses have a reputation for being aggressive and combative, and even the females have formidable horns that can be used to gore adversaries. The body of a black rhino is stout and tank-like, and its hide is very tough to penetrate. Adult black rhinos are typically immune from predation, but a 800kg female might be a target for a large lion pride or a coalition of Nile crocodiles (if the rhino ventures into the water). Even though the female rhino weighs less than the caffer buffalo in this scenario, she will be physically stronger and her center of gravity will be lower (she will be harder to topple). Her horns (especially the longer one in front) will be positioned better to inflict damage, and she will be able to thrust and turn her body with greater force than the buffalo will. Caffer buffalos are powerful herbivores, but black rhinos (even the female ones) are on another level. The rhino will be harder to injure, and will be able to dish out a lot more damage. Female black rhino wins.
5) 800kg moose vs 650kg female caffer buffalo: This will be a very large moose and a very large female buffalo. The moose will be taller at the shoulder than the caffer buffalo (Cape buffalo), but the buffalo's wide, stout build will make it difficult for the cervid to overpower. The bovid's thick horns (although not as large as the male's) are deadly weapons, and can be driven into an opponent with great effect. Caffer buffalo are well-practiced at conflict with dangerous animals (especially lions and hyenas), and can be highly dangerous to any predator that attacks them. The moose has wide antlers that serve it better as a shield or a plow than a weapon that causes significant damage (although the points on the antlers can cause wounds), and battles between males usually involve an antler-pushing contest (although areas on the body may be struck). Moose occasionally have to defend themselves from wolves and bears, but a healthy adult is usually left alone. The caffer buffalo, although smaller, will have comparable power upon contact, and its horns can cause deeper injuries than the moose's antlers can. Edge to caffer buffalo.