When cats are happy, they may squeeze their eyes shut.
10
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Some British police cars carry a teddy bear to console children after an accident.
46
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Dolphins have names for one another.
18
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