Why are giant pandas born so tiny?

Born pink, blind, and helpless, giant pandas typically weigh about 100 grams at birth—the equivalent of a stick of butter. Their mothers are 900 times more massive than that.

Signs of bac­teria in the bovine fetus

Contrary to earlier assumptions, the intestines of newborn calves are not sterile, but contain DNA from various bacteria. Bacteria or their fragments originating in the mother may be significant to the development of the ...