What is the strongest animal in a 1 on fight?

It's impossible to definitively say which animal is the strongest in a one-on-one fight because "strength" is a complex concept that can be measured in different ways. Here's why:

* Different strengths: Animals are strong in different ways:

* Physical strength: This includes muscle mass, bite force, and ability to inflict damage. A hippopotamus is incredibly strong in this regard.

* Speed and agility: A cheetah can outrun almost any animal.

* Defensive capabilities: A porcupine's quills or a squid's ink are effective defenses.

* Intelligence and strategy: Some animals, like primates, can outsmart their opponents.

* Size and Weight: A larger animal usually has an advantage, but this isn't always the case.

* Environment: The environment can heavily influence the outcome of a fight. A shark might be dominant in the ocean, but not on land.

* Fighting style: Different species have different fighting styles. A lion might use brute force, while a viper might use venom.

Some contenders for strongest:

* Hippopotamus: Extremely powerful, aggressive, and has a bite force exceeding 1,800 psi.

* Polar bear: The largest land predator, with immense strength, thick fur, and powerful claws.

* African Elephant: The largest land animal, capable of tremendous force with its trunk and tusks.

* Saltwater Crocodile: Powerful jaws, sharp teeth, and a reputation for being ferocious.

* Tiger: A formidable predator with incredible strength and agility.

Instead of a "strongest," it's more accurate to consider which animal would be most likely to win in a particular fight, taking into account all the factors above.