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Originally posted by Bumr055
I have heard of this but, not in rats... apparently when dogs 'pant' they are actually laughing.... It makes sense too, because dogs pant even when there not running 10000 miles an hour, they seem to do it when they get exited.
Originally posted by masqua
On the laughing, not too sure across natures fauna but I'm willing to give Dr. Panksepp and his rat study credence.
I do know that animals express joy in many ways and you needn't do long term experiments to prove that. I've personally seen the emotion expressed in just about everything but insects, snakes and worms.
And that may be due to the fact that their body language is unreadable.
Originally posted by ambushrocks
Chimp do that because they are frightend or angry. It's a sign saying don't come close! link