>>29014098bi·ped
ˈbīped/Submit
noun
1.
an animal that uses two legs for walking.
adjective
1.
using two legs for walking.
quad·ru·ped
ˈkwädrəˌped/Submit
noun
an animal that has four feet, especially an ungulate mammal.
No, it's pretty clearly restricted to legs/feet. Blaziken is a biped because the talons are attacthed to feet which are attached to legs which it walks on. Infernape is a biped because it had hands that are distinct from its feet.
The only arguable one is Typhlosion