A "quadruped" is any four-legged animal.
Yes. From the Latin words for "four" and "foot", a quadruped is any four-legged animal.
quadruped, because it walks on four legs.
Biped means two legged. (Bi=2) Quadruped is four legged. ( Quad=4) So a pig is a quadruped.
People are bipeds so pigs would be quadrupeds