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Fossil snake discovered in India may have been the largest ever
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Tiny nematode worms can grow enormous mouths and become cannibals
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Are panda sex lives being sabotaged by the wrong gut microbes?
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‘Peaceful’ male bonobos may actually be more aggressive than chimps
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Air pollution can make insects mate with the wrong species
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Left-handed monkeys prompt rethink about evolution of right-handedness
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Marine protected areas aren't helping fish populations recover
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Snakes show signs of self-recognition in a smell-based 'mirror test'
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Is every species necessary or can we let some die out?
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Horses used in therapy often avoid people if they are given a choice
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Birds make an 'after you' gesture to prompt their mate to enter nest
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Tiny deer from the dry valleys of Peru recognised as new species
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