A cow can deliver one calf at a time.
One. Twins occur in one out of 1000 births.
Cows can have one or two calves at a time. Odd time she'll give birth to triplets.
Most cows will give birth to a single calf. However, twin calves are not uncommon. I do not believe it is physically possible for a cow to have triplets, though.
A cow can have anywhere from one to 20 calves in her lifetime, depending on how productive she is and how long she is able to stay in the herd to produce those calves. On average, a cow will produce eight calves in her lifetime. Cows that are used for embryo transfer can produce up to twice as many calves in her life time than she can by her own doing. The record number of calves a cow has had in her lifetime is 39.
Neither. Both calves will be fertile. You will only get a sterile female calf if she's born to a twin bull brother.
Always one. I've never heard of two calves being born at the same time; if there were twins, it's always one after the other, as the cow's pelvis is only wide enough to allow one calf through at a time.
If it is a group of calves born from different mothers than you call them a herd of calves or a group of calves. If it is two calves born at the same time from the same mother than they are twins, just the same as human offspring would be called.
2-4 calves
One. Twins occur in one out of 1000 births.
Cows can have one or two calves at a time. Odd time she'll give birth to triplets.
Camels only have one calf at a time. Having twins is unheard of.
Most cows will give birth to a single calf. However, twin calves are not uncommon. I do not believe it is physically possible for a cow to have triplets, though.
Usually one calf per cow. Occasionally one cow may have enough milk to feed two calves, but dairy nurse cows can have as many as four calves suckling from her.
Do you mean, "How many other calves are delivered at the same time as a young bull?" Either zero or one, usually.
If the first calf born in the winter is white, the winter will be a bad one.
Walruses usually have only one calf at a time, although rare instances of twin calves have been recorded.
how many jaguars are born at a time