Female kangaroos have three vaginas.
2
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11