At birth, a blue whale calf weighs as much as an adult elephant. It will grow at a phenomenal rate, gaining around 10 pounds an hour or 250 pounds a day. This is possible because of its mother, whose ...

In mammals such as rodents that raise their young as a group, infants will nurse from their mother as well as other females, a dynamic known as allosuckling. Ecologists have long hypothesized that ...