Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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A cow produces around 200,000 glasses of milk in her lifetime.
373
Tigers can see 6 times better at night than humans.
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Cats sleep for 70% of their lives.
8