Koalas require a lot of sleep because their food gives them very little energy and eucalyptus requires a lot of energy to digest. Basically most of their energy is spent on digesting the eucalyptus they eat.

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Koalas require a lot of sleep because their food gives them very little energy and eucalyptus requires a lot of energy to digest

Octopuses have been found to have sophisticated problem-solving abilities, such as being able to open jars and solve mazes

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The American Bittern

Raccoons will build dens in human homes

image of albatrosses

In one Albatross colony, more than 30% of pairs were female–female