What was the first sexual intercourse like? A new study finds it involved fish and looked a lot like a square dance.
Orcas that have been socialized with dolphins mimic the sounds they make.
The giant kangaroos may look silly kicking and slapping, but they're deadly serious.
Handful of swimmers ferried to shore after being corralled and slapped by the large adult mammal.
The bats get close when the turbines aren't spinning, then they're in the line of fire when the turbines spin up.
Discovery of three new Jurassic Era animals suggests that early mammals, which resembled squirrels, first emerged 208 million years ago. Continue reading →
New research finds that nighttime behavior may have evolved 100 million years earlier than mammals did.
Two of the earliest mammal groups of the period likely were discerning about the types of insects they ate.
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