Udder size is heritable, yes. This is quantified by milk production: as we've seen in dairy cows, the larger the udder the more milk a cow will (or should) produce.
Not exactly. A cow can have a large udder yet produce a little amount of milk if she is either under stress or is not being fed properly. However, it is definitely true that a cow with a larger udder will be more productive in terms of milking ability than a cow with a smaller udder.
The whole sac between the legs of a cow is called the Udder. The four cylindrical protuberances below are called Teats. A cow's udder is divided up into four quarters. The front two are called the Fore-Quarters, and the rear two are the Rear Quarters. The large vein found on the belly of a cow that connects to the udder is called the Milk Vein.
Yes, of course! A cow isn't a cow without an udder now is she?
The teats on the udder.
The udder will only swell, the cow is dropping her milk into the milk cisterns in the udder for the calf to suckle.
on a cow
The udder, just like in a cow. The udder is stationed in the same area as a cow's, only there are just two teats, not four, on that udder.
That all depends on her breed and her body type. If she typically looks thin and sports a large udder between her legs, then it's likely that she is a dairy cow. If she is more blockier, not quite as thin and sports a smaller udder, then she would be a beef cow.
When the cow's udder is full and heavy, it needs to be milked.
UDDER
Another name for a cow's tit is udder. It is the mammary gland of a cow where milk is produced.
The part of a cow that releases milk is the udder. The udder consists of four teats, each capable of producing milk. Milk is produced in the mammary glands within the udder and is released when the cow is milked.