When cats are happy, they may squeeze their eyes shut.
10
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Dogs sometimes fake being sick to get attention.
26
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
A cow produces around 200,000 glasses of milk in her lifetime.
373
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16