Baby elephants suck their trunks in a similar way that human babies suck their thumbs.
When playing with female puppies, male puppies will often let them win, even if they have a physical advantage.
Rats can learn to play hide-and-seek and they squeak with joy when they win.
Parrot parents give their kids unique names and they call each other by them for life.
Fish can identify human faces and some can even learn to recognize their owners.
Seahorses get “married” and perform daily bonding rituals with their other half, like wrapping their tails together and dancing around seagrass to cement their bond.
Cheetahs don’t roar, so the purr or even chirp instead.
When a cat makes eye contact then slowly blinks, they’re giving you the feline equivalent of a kiss, communicating their feelings of safety.
Cat don’t meow to other adult cats, so if one meows at you, they’re making an effort to communicate with you.
Ravens and crows remember faces, so you could actually make friends with one.
Sea otters juggle rocks, and they have favorite ones which they store in a special pouch.
And of course we know that they hold hands when they sleep to stop drifting away, with the mums carrying babies on their bellies.
And if a dog puts their paw on you while you’re stroking them, it means they’re ‘petting’ you, showing that they care for you just as much as you do for them.
Pregnant dolphins sing to their unborn babies.
Sweden has a rabbit show-jumping competition called Kaninhoppning.
Gentoo penguins propose to their lifemates with a pebble.
Tigers can’t purr, so they fully close their eyes to show they’re content.
In some movies, the tails of dogs have to be altered with CGI because they were having such a great time on set they couldn’t help but wag them.
Cows have best friends and studies have shown they get stressed when separated from them.
Oysters can change gender depending on which is best for mating.