No they suck on it. They form a vacuum with their mouths to get the milk out of the teat.
Twins are not all that uncommon and when nursing, it's good to have an alternate as calves can nurse quite vigorously.
Yes. As mammals, cows do have hair/fur and produce milk for their young. The milk forms in the cow's udder and is available to the calf/calves at any of the four teats.
Cows and other animals have teats, women have breasts.
Yes, just like human males have teats and cows and heifers have teats. The only difference between the teats of bulls and cows is that the teats of a bull are non-functional.
Cows and first-calf heifers have four functional teats.
Calves are offspring of mature cows and bulls.
Calves that are suckling milk from cows which would be their mothers.
because they want to protect there calves
Cows give birth to baby cows called calves.
Yes, all cows have babies called calves.
Yes they are very protective of their calves.
As many as 50% of the dairy calves are born with more than two teats on a side, but these extra teats, called supernumerary teats, always form on the same line with the two primary teats on each side. If the supernumerary teats are allowed to develop further then they can hinder the milking process when the cow is mature. Even though they usually are not very productive in making milk, they can add to the cow's risk of the udder becoming infected with bacteria. With those risks in mind, the extra teats usually are removed when the calf is only a few days old