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.
All four-legged animals are called Quadrupeds, 'quad' - four; 'ped' - foot.
Quadrupeds are animals that have four feet used for walking. Zebras, horses, cows, and the praying mantis are quadrupeds. Most quadrupeds are mammals.
Quadrupeds .
four footed animals may be called Quadrupeds
A quadruped. Humans are bipeds (2 legs).
Quadrupeds.
Four-legged. Literally, four-footed ("ped"). It usually refers to a four-legged animal. Cows, dogs, deer, and lions are all quadrupeds.
Yes they both have four feet.
Yes. From the Latin words for "four" and "foot", a quadruped is any four-legged animal.
People are bipeds so pigs would be quadrupeds
An ox has four legs. Like all cattle, they are quadrupeds, meaning they walk on four limbs. This anatomical structure is typical for members of the bovine family.
No. Actually, the elephant is the only animal with four knees.