A cow carries a calf for nine months, according to the Environmental Protection Agency. Females sexually mature at 15 months and are bred to optimally deliver their first calf at two years of age. After a brief two- to t... More »

Calves can be weaned in one to four weeks, depending on the breed, age and weaning method. Most methods involve separating the mother and calf. Some involve moving the calves to another herd or putting a strong, small-ho... More »

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 »

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 »

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 »

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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 »

Either a baby bull or a baby cow is called a calf. If the baby bull is castrated prior to puberty, he is called a steer. More »