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Quiscalus-quiscula-001

A Common Grackle.

Aardonyx NT

A prosauropod, Aardonyx.

Macropus greyi - Gould

An illustration of a Toolache Wallaby .

Chlamydosaurus kingii

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

  1. ^ Terres, John K. (1980). The Audubon Society Encyclopedia of North American Birds. Alfred A. Knopf, Inc. ISBN 0394466519. 
Anatomy of an amiotic egg This article is part of Project Glossary, a All Birds project that aims to write comprehensive articles on each term related to animals.


Hypuronector 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.
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