From jaw-dropping sacrifices to super-pregnancies, some mothers in nature do anything for their offspring. Earth Unplugged reveals the world’s most impressive animal mums.

Do you know which animal gets so hungry defending her eggs that she’ll eat her own arm? Or which creature has the world’s longest pregnancy, a staggering 22 months? Find out as Maddie Moate of the Earth Unplugged team reveals the ultimate mothers in nature.

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