A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Female kangaroos have three vaginas.
2
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9