I don`t know... my Grandpa??? NO really it`s a wild bore.
No. Actually, the elephant is the only animal with four knees.
No, elefants usually have two tusks.
Elephants are the only animals that have four knees. Their hind legs and fore legs bend just the same. Elephants can gain top speed of 7m/sec without running.
Lions do not have tusks, they have teeth, and they have more than 4 of them.
2. A previous answer here said four, however only elephants have four knees. A rhino's legs rotate like a dog or cats, so they only have 2 knees.
It means that you get down on your hands and knees, and stand like a four legged animal, 'on all fours'.
No animal has four knees - including elephants! This is a bad myth gone out of control. If you don't believe me, actually have a look at a skeleton of one. Simple really.The joint on the front legs of any four-legged herbivore, such as horses, cows, elephants, deer, sheep and goats that resemble our own knees (and are often informally labeled as such) is actually called the carpus - the cluster of bones that form the wrist. The real knees on animals are located on the hind legs just like humans, which are often referred to as the stifle joint.
No. No quadrupeds have four knees, it is just that on some, the proportions make them look as if they do. On the front legs of giraffes, the part that looks like a knee is actually a wrist. EDIT: The original poster is wrong, Elephants have 4 knees.
Animals that have tusks may be found on land and in water. For example, the elephant has two tusks, and lives on land. Having tusks also is a characteristic of the narwhal and the walrus, which live in water.
i think it has four because it has four legs
Horses do not have knees in the same sense that humans do. They have front legs with knees that are equivalent to our wrists, and hind legs with hocks, which are the equivalent to our ankles. Instead of bending their legs at the "knee," horses extend their legs or "lock" them in place.
Most mammals (e.g. horses and dogs) have knees that bend the way human knees do. However, when you look at a mammal's leg, the knee is not in the same place you're used to finding it. Many four-legged animals actually walk on their toes, and have elongated feet and ankle bones. Take a look at a dog or horse skeleton on the internet, and you can see that what seems to be a "backward bending knee" is actually the animal's ankle!