Rats Laugh, but Not Like Humans
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Descrição
Tickling Rats for Science
The Study That Made Rats Jump for Joy, and Then Killed Them - Webb
Watch What Happens When Scientists Tickle a Rat
Do animals have a sense of humor? This scientist has been tickling
Coquitlam Wildlife Control: Can Rats Laugh?
Laughter: An essential feature of human social interactions
Rats ARE ticklish but they only 'laugh' when they are in a good
The science of laughter - BBC News
Why we should learn to love rats, The Independent
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