Rats laugh

Telling a joke won't work, but scientists say a rat will laugh when tickled--and they're not joking.

• 2012-07-02T16:07:11+00:00
• Duration: 01:15

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Keywords

Science & Technology , Animals , Science , Video, Jaak Panksepp , Animal Behavior , Animals Laugh , Laughter , Rats , Rats Laugh , Rats Study , Rats Tickled , Science News, HuffPost , The Huffington Post, animals, animales, lol, .cute, omg, fun, funny, hilarious, comeyd, humor, pet, pets, mascotas, rata, ratones