The chameleon may be the world’s most recognizable color-changing animal, but that doesn’t mean that it’s the only creature of its type on the planet. There are more than 20 birds and mammals that can ...

Four of them live in Colorado: snowshoe hares, white-tailed ptarmigan, short-tailed weasels and long-tailed weasels.

Color change in animals is a response shaped by evolution. Each species has developed its own method and reason for this ability, like an overreliance on light or temperature cues, or a physiological ...

Camouflage isn't the only way cephalopods have evolved to change their appearance. Octopuses and other cephalopods make the fastest transformations in the animal kingdom. Here, a giant Pacific octopus ...