Making your own butter seal, also called a fat seal or fat cap since you could use animal fats such as duck instead of butter ...

Imagine feeding your baby a milkshake for every meal. Well, for hooded seal pups, that's nothing. Their mother's milk contains 60% fat, the fattiest milk in the world. For comparison, the richest ...

Nathan Coleman has more. Grey seals are born in late December and January when they are quite scrawny and have almost no fat stores. How, then, do they manage to survive in such frigid temperatures?