The udder will only swell, the cow is dropping her milk into the milk cisterns in the udder for the calf to suckle.
Not exactly. A cow, when she is a heifer, starts developing mammary tissue a few weeks before having her first calf (where she is actually called a first-calf heifer not a cow), and retains that udder throughout her life. A cow doesn't just all of a sudden not have an udder before giving birth or suddenly have an udder after giving birth--it doesn't work like that. Once she has an udder, she keeps that udder until she dies. Besides, a cow is a female mature bovine that has already had one or two calves and thus already has an udder. A heifer, on the other hand, is a female bovine that doesn't have a fully developed udder, not until she is close to calving (if she's been bred at the right time).
There's really no name for such a thing. All it is is that she's just ready to give milk to her newborn calf.
Are you meaning fetal development, or in a heifer? In the heifer, the udder starts to form as her unborn-calf develops, although this development can vary dramatically from heifer to heifer. Some fully bag-up (are full of milk) weeks before the calf is born; some do not get a full udder right before or right after the birth. The breed of cow also influences the size and development of the udder. Udder development continues during lactation. The udder stretching by being full of milk, and the calf nursing on the teats, helps to increase the size of the udder in the young cow. By the second birth, the udder will often be larger and really show the cow (goat, sheep's) potential as a milk-producer.
The teats on the udder.
Usually cattle will begin to develop an udder about 5 months into term (or sooner depending on the animal). However, a couple days before the parturition, you can notice the udder filling up more as the milk drops into the milk canal and the teats. This is a sign that she is going to freshen.
The floor of the udder is just that- The floor of the udder. The shape of the udder is determined by the medial and lateral suspensatory ligaments. Poor ligaments mean a saggy, mastitis prone, misshapen udder.
The Udder.
Normally, the mares' udder will not fill up with milk until about 3 weeks before she delivers her foal. The udder will begin to swell during part of the day and go back down part of the day. Some mares will not develop milk until a day or so (or even hours) before foaling. If you have any concerns whatsoever, please call a vet. He or she may need to check to make sure both mare and foal are doing okay.
None. Calves don't suckle on any breast, they suckle on the udder (NOT "utter") of their mothers, being cows. Breasts are for baby humans, apes and bear cubs and possibly even elephants. But not calves.
A complex system of ligaments holds the udder to the abdomen.
When the cow's udder is full and heavy, it needs to be milked.
Cows only have one "breast," and that is the udder.