Rattlesnake mating sessions have been known to last more than 22 hours.
232
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
Only 3% of bird species have penises.
0
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20