For These Trickster Animals, Every Day is April Fools

The weekend's finally here, which means it's time for Saturday's Weird Animal Question of the Week.  April Fools! It's actually Friday, but we couldn’t wait to take the author’s prerogative to talk about some animal tricksters that don’t limit their sneakiness to one day a year. (See "Gotcha! 5 of History's Most Outrageous April Fools' Day Hoaxes.")

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Do Animals Laugh? Tickle Experiments Suggest They Do

How do whales hear music? They listen to orca-stras!  I told that joke to a lizard and got crickets. It made me wonder the same thing as Eid Muhammad Afridi, who asked Saturday's Weird Animal Question of the Week, "Do animals laugh?"  So far, apes and rats are the only known animals to get the giggles.  Koko, the western lowland gorilla famous for her facility with sign language, "thinks that me being clumsy is funny," and will make laughing noises, says Penny Patterson, president of the California-based Gorilla Foundation.

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