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, 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.
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.
The promises of some calves = some cows' vows.
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.