The average weight of a calf at birth is 63.6 pounds for females. Male calves weigh about 5 percent more at birth. The size of the heifer, temperature and maternal nutrition all influence a calf's birth weight. More »

A baby whale is a calf, his mother is a cow and his father is a bull, and together, the family is a pod. Baby whales grow in the mother's uterus from 10 to 18 months, depending on the species. A calf receives nutrients i... More »

Dolphins generally give birth to just one baby at a time, which is referred to as a calf. Unlike many animals, dolphins rarely have multiple births. After enduring a gestation period of 9 to 17 months, expectant dolphins... More »

The average weight of males and females at 13 years of age is 100 and 101 pounds, respectively, according to Disabled World health experts. The weight of young adults this age ultimately depends on the height, gender and... More »

www.reference.com Health Nutrition & Diets

Although both are female bovines, one difference between them is that a heifer is a young female under the age of 3 years while a cow is an older female that has given birth to a calf. The term "heifer" refers to a young... More »

www.reference.com Pets & Animals Mammals Barnyard Mammals

Once pregnant, a cow gives birth to a calf in nine months. The average cow has its first calf at around two years of age. More »

A heifer is a mature female cow that has not calved, or given birth to a calf, yet. As soon as a heifer gives birth, she becomes a cow. A cow refers to a female of any age that has given birth. More »