Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23