A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Parrot parents "name" their children with a signature call.
112
The octopus does not have a blind spot.
273
Cows can sleep standing up, but they can only dream lying down.
745
Cats and dogs can hear ultrasound.
350