No let her be alone
yes
Castrated? A neutered male rabbit.
Male
There is no specific name for a castrated male rabbit. BUT!, it just means the male rabbit is nuetered or the female is spayed.
Male rabbits who aren't neutered can't have other animal companions because they will either fight them or, in the case of unspayed female rabbits, mate with them.
Sad. No really, you would still refer to him as a male.
To have the highest chance of success, both rabbits should be fixed and neutered. Otherwise, unfixed rabbits will usually be too territorial to be able to bond. If your baby rabbit is too young to be neutered, at the minimum, have your adult rabbit neutered. Be warned, that even if you succeed in bonding the baby and and the adult, when the baby reaches sexual maturity, the bond may break. Read the related links for more information on how to bond two rabbits.
Have one of then de-sexed, neutered for males and spayed for feemales. Or keep them apart.
In almost all cases, yes. This is because female rabbits are territorial and most male rabbits fight. In rare cases will and un- neutered/spayed rabbit live with another rabbit.
The male rats (or mice) used in labs do not usually get neutered.
Why do you want to breed your rabbit? There are tens of thousands of unwanted rabbits in rescue centres desperately looking for good homes. There are not enough good homes for these poor unwanted rabbits as it is. Please don't add to this problem by breeding unnecessarily. Your female rabbit should be neutered. Not only to prevent her becoming pregnant and bringing more rabbits into a world but also for her health. 80% of female rabbits get womb cancer by 6 years of age if they are not neutered. If she is neutered she can live with the male rabbit for company. Rabbits are happier when they have company. If you care for your rabbit, please be a responsible owner and don't breed her.
You can have a neutered male and female boxer without worrying that they will try to mate. The dogs will not mate if the male is neutered.
Are we talking UNNEUTERED male cats, and UNNEUTERED male rabbit? You are leaving yourself open for a lot of spraying. Neutered males should be able to co-exist unless someone has a dominant intimidating personality, which can't be determined until they are all in the house together.