Greyhounds have the best eyesight of any breed of dog.
A rodent’s teeth never stop growing. They are worn down by the animal’s constant gnawing on bark, leaves and other vegetable matter.
The ring-tailed lemur, a primate found only on the island of Madagascar, meows like a cat.
Genuine ivory does not come only from elephants. It can come from the tusks of a boar or a walrus.
The average porcupine has more than 30,000 quills. Porcupines are excellent swimmers because their quills are hollow and serve as pontoons to keep them afloat.
Deer have no gall bladders.
The crocodile is surprisingly fast on land. If pursued by a crocodile, a person should run in a zigzag motion, for the crocodile has little or no ability to make sudden changes of direction.
Contrary to popular belief, dogs do not sweat by salivating. They sweat through the pads of their feet.
When a hippopotamus exerts itself, gets angry or stays out of the water for too long, it exudes red sweat-like mucus through its skin.
The sea lion is susceptible to sunburn, and if put on board a ship, it will get as seasick as man.
