heres nice facts know  fight male puppy always lets female puppy win  penguins propose stick together life  forcing smile actually makes smile  voice actors mickey minnie got married real life  baby sloths addicted cuddling  sunshine warmth makes happier  cows best friends get sad apart  sea otters hold hands sleep  norway knighted penguin  china killing panda punishable death  rats laugh tickled  dolphins names eachother  puffins mate life  good news likely shared social media bad news  angry way say word bubbles  koko gorilla could communicate sign language pet cat  gorillas remember old friends  sheep recognise facial expressions like smiles  baby elephants suck trunks comfort  squirrels adopt baby squirrels theres