it should be. or the calf could "get stuck". the vulva will swell prior to giving birth unless the calf comes really early.
A cow's vulva is synonymous to a woman's "vagina" or vulva, and is the entry point from the outside where cows conceive to produce offspring, give birth to a calf, and also urinate from. The vulva of a cow is the entry-way to the vagina and the uterus, and is a part of the cows' reproductive system.
This could be pregnant, or in calf. By the way, its cows that are only pregnant, it is physically impossible for calves (as they are babies) to get pregnant.
Yes. In a cow-calf operation, cows always have to get bred 2 months after they've calved, which means that they are still suckling a calf when they get bred and subsequently get pregnant.
Never. Chimpanzees can not give birth to young cows (a calf).
A bull calf is male with male reproductive organs, which means he cannot get pregnant. Only females (heifers, possibly heifer calves and cows) can get pregnant. Thus, your question has no merit whatsoever.
No. Once a cow is pregnant she won't have any signs of heat again, until after she gives birth to her calf.
No, not in a significant amount that it would adversely affect the calf or a human.
It all depends on how swollen the vulva is and how quickly it swells. My pregnant cows vulva has doubled its size overnight so Im assuming a week or so. From memory it was huge last time she gave birth,it was large enough and floppy enough that it bounced as she walked and then she calved within the week. But I do think all cows are different,going by age and if she has calved before. Id also like to add,you can tell by the change in the cows behaviour where shes at. They tend to isolate themselves,rest more and urinate more just before calving.
No. Cows can be open and still be able to lactate. They must have GIVEN BIRTH to a calf in order to be able to lactate.
If you are referring to the hymen of the vagina, no, cows nor heifers have such a membrane on their vulva.
She may bawl a bit and pace the fenceline. If you're in the pen with her, she may try to mount you. Her vulva will also look red and swollen, and a few days after she's gone in and out of heat, you will see a little bit of bloody discharge from her vulva.
Female whales are called cows. The calf is a calf.