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Budgies are contagious yawners, too

We've all caught ourselves yawning right after a friend yawns, and some people even describe this phenomenon with their pet dogs and...

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Jays "weigh" peanuts, choose heavier ones

Birds shake shelled peanuts to figure out the quality and quantity of "nut" inside. This is important because birds don't want to waste...

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Individual whales have unique voices

Researchers studying right whale* vocalizations found that they could tell apart individuals based on their voices. Specifically,...

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The astounding client-customer relationship in cleanerfishes: undersea barber's poles, individualized grooming dynamics, and the intrinsic value of massages

Why don't big predatory fish eat cleaner fish, the small reef-dwellers who groom and eat parasites off of their customers? Because...

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