An udder is an organ formed of two or four mammary glands on the females of dairy animals and ruminants such as cattle, goats, and sheep. An udder is equivalent to the breast in primates and elephantine pachyderms.

Do all cows have udders?

Only female cows have udders in order to feed baby calves milk. On the other hand, their male counterparts or bulls only have nipples, no developed breasts, so they don't have any udders.

Can you milk a bull?

Mature male cows are known as bulls and the immature ones are called steers. And No, bulls can not be milked they are made as breeders. They have teats but no udders. And no scientific way of milking bulls has been discovered yet.