Mammals run hot. The ability to maintain an elevated, constant body temperature—known scientifically as endothermy and colloquially as warm-bloodedness—is a critical part of what has allowed these ...

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 ...

The World Health Organization (WHO) recommends feeding breast milk along with complementary foods until age 2. The Atlantic gray seal (scientific name Halichoerus grypus) nurses its pups for only 17 ...

Much like baby mammals nursing at the teats of their mothers, some baby jumping spiderlings are entirely dependent on nutritious spider milk secreted and fed to them by their mothers. What's more, ...