There's no definitive winner, as it depends heavily on the environment and species, but hippos have superior aggression and a devastating bite in water, while rhinos possess tougher skin and a powerful horn for charging on land, making the outcome a brutal, injury-heavy draw or victory for either depending on who gets the first decisive hit in their element.
Rhino wins on land being that he's larger, faster and deadlier with the horn. Hippo would really only have a shot in deep water despite it being much more aggressive.
Elephant
An elephant has the best chance against a hippo based on size and power. Elephants are one of the few animals that would stand a chance in a fight against a hippo. They have a great size and height advantage against them.
The mosquito is the world's most dangerous animal, responsible for over 700,000 deaths annually, primarily by transmitting deadly diseases like malaria, dengue, and Zika virus. While animals like sharks, lions, and snakes kill people, mosquitoes spread infections, making them the deadliest creature to humans, far surpassing any other.
African wild dog. The African wild dog, (Lycaon pictus) is a canine native to Sub-Saharan Africa. While it shares its environment and food sources with other top predators, they have no natural predators of their own.
Nile crocodiles, lions, and spotted hyenas are known to prey on young hippos. Beyond these, adult hippos are not usually preyed upon by other animals due to their aggression and size.
Facing off against Spider-Man, Rhino easily overpowered the web-slinger with his reliance on brute force. However, the crafty hero quickly identified the Rhino's primary weakness, that he would charge in one direction without the ability to change course.
The two species most often reported to prey upon rhinos – usually young rhinos – are lions in Africa and tigers in Asia.
There is a common folklore belief that elephants are afraid of mice. The earliest reference to this claim is probably by Pliny the Elder in his Naturalis Historia, book VIII.
A hippo's bite force measures between 1,800 and 2,000 PSI (pounds per square inch)—enough to crush bones, tear through boats, or snap a Nile crocodile in half. Their jaws, capable of opening up to 150 degrees (nearly three times a human's range), span 4–5 feet wide, making them one of Africa's deadliest animals.
Reaching speeds around 55 km/h (34 miles), this heavily armored mammal will not quit charging until you are no longer a threat. Climb a tree if you want to, but unless the origins are hardy, they will trample it to the ground. Using its ability to change direction quickly, you won't outrun this beast.
Despite their size and strength, hippos have a notable weakness in their stamina. While they may have bursts of speed and power, they can tire quickly in a fight or chase. This weakness can be exploited by predators or rivals who are willing to outlast them in a confrontation.
Crocodiles, being ambush predators, frequently seek out opportunities to seize prey without risking injury. A violent battle with a hippo can result in serious injuries for a crocodile, such as fractured bones or crushed limbs.
A pride of lions won't target a fully grown rhino. The risk of injury and the amount of energy it would require to bring down such a large animal make it not worth the kill for the lion. But that doesn't mean that lions always leave rhinos alone. Lions may target rhino babies and old, weak, or injured rhinos.
Yes, 100 men could likely defeat a grizzly bear, but only through overwhelming numbers and strategic, sustained attacks to exhaust and subdue it, as the bear's immense strength, claws, and teeth make it lethal to any single man, causing immediate panic and high casualties in a chaotic, unarmed fight. The bear would dominate the initial charge, but its stamina is not infinite, allowing a coordinated group to eventually win by exploiting its exhaustion, bleeding, or by suffocating/choking it, though it would be a brutal, costly endeavor.
Polar Bears are one of the most, if not, the most powerful land predator and would mess a giraffe up most of the time. Giraffes have never faced such a powerful and large predator before, and lions don't come close in comparison.
In regions where their ranges overlap, tigers stand as the only big cats capable of regularly hunting and killing adult bears. These apex predators possess the size, strength, and hunting skills necessary to take down even fully grown brown bears and Asiatic black bears.
Here are the top 10 most harmless animals in the world.
Lions, hyenas, and crocodiles may attempt to prey on young or sick elephants. However, elephants are often successful at fending off predators, protecting their young, and defending sick or injured herd mates.
Penguins have no special fear of humans and will often approach groups of people. This is probably because penguins have no land predators in Antarctica or the nearby offshore islands. They are preyed upon by other birds like skuas, especially in eggs and as fledglings.