Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Dolphins nap with one eye open.
-7
A shrimp's heart is in its head.
32
Butterflies taste with their feet.
30
The lifespan of mammals is about 1 and a half billion heartbeats.
127
In Brazil, there's a species of cockroach that eats eyelashes, usually those of young children while they are asleep.
151
A marine catfish can taste with any part of its body.
38
