

A prosauropod, Aardonyx.

An illustration of a Toolache Wallaby .

When threatened, a Frill-necked Lizard may run on its hind legs.
Term among zoologists for an upright posture in locomotion whereby an animal walks or runs on its two hind feet. Quite a few vertebrates beside man share this upright locomotor posture—for example, many reptiles that lived in the Mesozoic, some living reptiles, birds, and kangaroos[1].
References
- ^ Terres, John K. (1980). The Audubon Society Encyclopedia of North American Birds. Alfred A. Knopf, Inc. ISBN 0394466519.
This article is part of Project Glossary, a All Birds project that aims to write comprehensive articles on each term related to animals. |
Project Glossary | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ||||||||||||||||||||||||
![]() |
This article is part of Project Animal Behaviour, a All Birds project that aims to write comprehensive articles on each term general related to animals. |