Whale Milk Not On Low-Fat Diets
Nursing a newborn is no "small" feat for the whale, whose calf emerges, after 10 to 12 months in the womb, about a third the mother's length (that's a 30-foot baby for theBlue whale). The mother squirts milk into the newborn's mouth using muscles around the mammary gland while the baby holds tight to a nipple (yes, whales have them). At nearly 50 percent fat, whale milk has around 10 times the fat content of human milk, which helps calves achieve some serious growth spurts -as much as 200 pounds per day.
Crocodiles Swallow Stones for Swimming
The stomach of a crocodile is a rocky place to be, for more than one reason. To begin with, a croc's digestive system encounters everything from turtles, fish and birds togiraffes, buffaloes, lions and even (when defending territory) other crocodiles. In addition to that bellyful-o'-ecosystem, rocks show up too. The reptiles swallow large stones that stay permanently in their bellies. It's been suggested these are used for ballast in diving.
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