An animal that walks on all fours.
an animal especially a mammal having four limbs specialized for walking
an animal having exactly four walking legs
an animal that walks on four legs
A creature that walks on four legs
Quadrupeds walk on four legs.
An animal such as the horse that walks on all four limbs.
On "all fours"; prone (front) on elbows/knees or hands/feet.
An animal who uses all four limbs to support his body while walking.
Quadrupedalism (from Latin, meaning "four legs") is a form of land animal locomotion using four legs. The majority of walking animals are quadrupeds, including mammals such as cattle and cats, and reptiles, like lizards. Birds, humans, insects, crustaceans and snakes are not quadrupeds.