Yes.
calf and a cow
Not if the cow's producing far more milk than the calf needs each day.
This depends on the cow, actually. Some cows may start lactation right after her calf is born, others (and this may refer to most) will start freshening (producing milk) a few days to even a few weeks prior to giving birth. One of the classic signs that a cow is about to give birth is that her udder and teats start to engorge themselves with milk.
If the calf is sleeping, not interested in a bottle you want to get it to drink from, and the cow's bag isn't all shrivelled up but the teats look wet, then the calf's getting what it needs. Let the cow do her job: you'll create more problems when you interfere than if you interfered less.
The udder must be tucked up neatly between the hind legs and the teats should be small. Each quarter of the udder should be equally spaced, and the udder itself has a level udder floor. Often this is hard to see if the cow has a calf and the calf has only suckled on one or two quarters and not all four. But typically a cow should not have an udder that hangs down past her hocks, have large teats, nor have the teats spaced too close together. Check out the related links below on udder conformation of cattle.
The name of a baby cow is a Calf
Since cows are mammals, baby calves get milk from their mother's mammary glands. These are located below the female cow's rib cage, on their abdomen, slightly forward of their hind legs. They are commonly known as udders, and the average cow's udders have four nipples, called teats. These teats are about as long as a person's middle finger.
An adult female that has had a calf is a cow.A young female before she has had a calf and is under three years of age is called a heifer.
No. A cow only has four teats, not 16 or 8 or 7 or whatever number you come up with.
The baby is called a calf and mother is a cow. Together they are called a cow-calf pair, or "mom and baby."
Only four teats on a cow shouldn't be considered as "many." The advantage of having four quarters--and thus four teats--on a cow is so that the calf doesn't suckle one milk gland completely dry. It also allows the calf to come back for seconds to the other quarter[s] that are still full of milk.
There are really two ways to tell if a cow (or heifer) is a virgin or not. One is by the size of the vulva, and the other by the udder and teats. A virgin cow (a female that has already reached adult maturity at around 3 years of age) that is not pregnant or has never been bred will have a smaller vulva and almost no udder (except for four small teats between the legs). Cows that are not virgins will have a larger, more defined udder and teats and a larger vulva. The reason this is so is because, with the udder, milk needs to be produced in order to raise a calf. Mammary glands in cattle are only developed when the cow or heifer is pregnant: growth of teats also occur to allow for a "better grip" for a calf to suckle on. As for the vulva, they are larger in "experienced" or non-virgin cows because they have been stretched out from having to pass a calf through the birth canal. This stretching is the same in women, and is the very reason why heifers and women who give birth for the first time find it more difficult (and more painful) to give birth than those who have given birth before.