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I'm not really all that suprised to find that other primates laugh like humans do. God knows, I'm pretty convinced that dogs and cats have a sense of humour.

But I thought it was a pretty cool little factoid.

Admittedly, working two double shifts back-to-back has also made me a wee tiny bit loopy.

And it was the bestest Utterly Probable Theory of Living Organisms Changing Over Time Day EVER!

Hope you had a good Darwin Day, kids!