Usually one, but occasionally she will drop twins, and even rarer still, triplets or quadruplets. But the average cow always drops one calf a year.
A cow is generally and usually expected to give birth only once a year. However cows can give birth to calves once every 11 months. Occasionally a cow will give birth to a calf 10 months after her previous parturition, but that is quite rare.
Once.
Narwhals typically give birth to a single calf after a gestation period of about 16 months. Twins are extremely rare in narwhals. Calves are usually born in the spring and are dependent on their mothers for about a year before they start to eat solid food.
Usually only once.
This question is impossible to answer since we have no idea of location where these calves are born, location as in country or state/province.
Bison cows primarily give birth to one calf a year.
Red deer usually have about 2-3 calves but twins are very rare.
A female moose usually calves once per year, and has one calf at a time, twins are rare.
A cow is generally and usually expected to give birth only once a year. However cows can give birth to calves once every 11 months. Occasionally a cow will give birth to a calf 10 months after her previous parturition, but that is quite rare.
250
Once.
2 times in a year
Normally once.
twice
A cow is usually bred to give birth when she turns two, at this time she is fully mature and ready to produce. After that she can have one calf every year. Depending on genetics, she can still be producing calves by the age of 7-9.
Usually only once.
Small mammals like mice and shrews can give birth many times in a year.