The earlier the better, so they can be spayed when they are 6 months old.
every 24 hours
A female dog should be spayed between seasons so you should count two months from the last season.
Spayed female cats are called just that - spayed, or fixed, female cats.
It doesn't matter that much, it just depends on personal preference, whether or not they get along with each other and with other pets in the family, and if they are neutered/spayed. If they aren't neutered or spayed, you should be sure to get the same gender puppy if you do not want them to breed.
Not usually - a female goat would only get spayed if she had an issue with her uterus.
Talk to your vet about this.
The female should be spayed (fixed) at about 6 months. Some believe that she should have a litter before being spayed, but the only thing that does is add more unwanted dogs to the dog pound.
Spayed female cats and dogs do not menstruate.
Female rabbits can be spayed when they are about 6 to 7 months old.
If she has never been spayed (fixed) she is most likely just menstruating (having a period). It is normal. But if she has been spayed and is bleeding, you should call a vet.
you get them spayed or nutered.
You should go with a girl, if you have both, then both.
Spaying is the removal of the ovaries from a female dog. No dog that is spayed can have puppies. No female dog can have puppies with another female dog. If you are asking about a male dog, the correct term is neutered, not spayed.