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Just like humans, dogs can also struggle to get decent night’s sleep because of stress. Even a short period of being separated from their owner or the presence of threatening stranger can throw off their whole sleeping pattern.
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Koalas can sleep for up to 20 hours a day, due to their low energy diet, and the intense amount of energy required to break down toxic leaves.
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The expectancy of spayed cats was 39% greater than that of intact female cats, and the life expectancy of neutered cats was 62% greater than that of intact male cats.
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After sex, the male rat emits a series of low-frequency calls that he is not yet ready to have sex again. It is called a “postejaculatory song”
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