The first symptom should be the most obvious: she doesn't come back into heat after 21 days after her initial heat period when she was supposedly bred. After 45 to 90 days have passed and she hasn't...
It depends on you and what your plans are for the female and her calf and your experience with calving females. Often bred heifers are cheaper than bred cows, but they can be a pain in the rear when...
Technically, no. A heifer is a female bovine that has NOT had a calf, thus it is not a cow. A cow is a mature female that has had a calf. In the general context of a "cow," covering all ages and...