Exceptions are the ground pangolin and in some circumstances the tree kangaroo.

Only a few mammals such as humans and the ground pangolin commonly show an alternating bipedal gait.

Ground pangolin (M. temmincki)

Leptictidium ("graceful weasel" in Latin) is an extinct genus of small mammals; together with macropods, ground pangolins, and humans, they are the only known completely bipedal mammals.

The Ground pangolin (Manis temminckii), also known as Temminck's Pangolin or the Cape Pangolin, is one of four species of pangolin which can be found in Africa and the only one in southern and eastern Africa.