Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
When cats are happy, they may squeeze their eyes shut.
10
The cat brain weighs about 30g.
167
The reindeer is the only mammal that can see UV light.
17
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12