The Basenji dog is the only dog that is not able to bark.
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Cats recognise the voice of their owner, but never evolved to care.
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By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
Sheep, goats, octopuses, and toads have rectangular pupils.
7
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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