Adorable Grey Seal Pup Must Bulk Up More For The Winter

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Grey seal pups need to quickly bulk up and develop the blubber that will keep them warm in cold waters.

Reddit user rayonymous explains:

At birth Grey Seal pups weigh only around 14 kg, their mother's high fat milk allows them to quickly bulk up and develop the blubber which is essential for survival in the cold sea water.

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