The whiskers of elephants and domestic cats have stiff bases that transition to soft rubber-like tips, different from the stiff whiskers of rats ...
AZ Animals on MSN
New interactive avian tree of life lets you trace 11,000 bird species back through time
Imagine zooming out on a giant family tree that includes every bird you have ever seen. Ostriches sprint across open plains, hummingbirds hover at flowers, penguins slice through cold seas, and eagles ...
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