Callosciurus erythraeus are medium in size with adults reaching a total head and body length of up to 200 mm. They have strong claws on their fingers and toes, excellent for digging holes to cache a supply of nuts. The ankles have extreme rotational capability and the claws, which they sink into the bark of a tree branch or trunk as they run, ensure them a firm grip as they chase nimbly through the trees. With large, protruding eyes, red-bellied squirrels have sharp vision and can distinguish vertical objects particularly well -- a useful ability for an animal that spends much of its time in trees leaping from branch to branch. Because of eye location, they are able to see behind, overhead and underneath without turning their heads, giving them the ability to survey the area for any signs of danger. The eyes also contain cones within the retina, allowing Callosciurus erythraeus to see the bright colors of its surroundings. (NatZoo 1992)
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: sexes alike
Average mass: 272 g.
Rights Holder: The Regents of the University of Michigan and its licensors
Bibliographic Citation: Rodriguez, D. 1999. "Callosciurus erythraeus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at
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