The octopus does not have a blind spot.
273
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6
A cow produces around 200,000 glasses of milk in her lifetime.
373