Female cats should not go in heat when they're pregnant because it may harm the fetus.
Female cats can get pregnant as early as 4 months of age.
I thought only male cats spray... never heard of a female cat do it! in fact they don't. I think your dreaming!
Male cats can sometimes detect changes in the scent and behavior of female cats that indicate they are pregnant. This can be due to hormonal changes that occur during pregnancy.
after they go into heat.
no, it doesnt mean she is pregnant. A male and female cats both have nipples. The females use theirs if they ever get pregnant. It is a storage area for milk for when she is pregnant.
No; Only when in heat is a female cat interested in a Tom cat.
They can get morning sickness, yes.
Tom cats may still be attracted to spayed female cats because they may still emit pheromones that attract males. Additionally, the behavior of tom cats is influenced by instinct and territory marking, so they may still try to pursue and mate with a female cat even if she is spayed. Keeping your female cat indoors and providing a safe and secure environment can help prevent encounters with tom cats.
You can't. Only female mammals - and cats are mammals - have the required body parts to get pregnant.
Female cats are fixed through spaying surgery by removing their ovaries and uterus, which prevents them from becoming pregnant and eliminates their heat cycles.
Cats are notorius for having false pregnacies.
I think you mean Neutered? :P Well cat's get Neutered because the owner does not wish for the cat to get other female cats pregnant. Neutering is for Male cats and Spaying is for Female Cats. If you would like to breed cats, then don't get them neutered/spayed! If you do not get your cat neutered, it doesn't mean that it's going to get female cats pregnant, you'll just have to keep a close eye on them. I have noticed that when a cat is in heat, it gets rather annoying! But that's just me! :)