You have to become a veterinarian. It's a doctorate.
Only with most of their dogs and cats. They don't spay any of their female livestock, but will neuter or castrate the male livestock that are undesirable for breeding.
The term spay is used to mean the sterilization procedure performed on female cats and dogs. During the surgery, the female reproductive organs are removed.
It should be available.
4months old is the best time for small dogs to be spayed, and do not spay them before 3months. At any rate, most small dogs have their first heats at 6-7months. Spaying before their heat is more helpful.
Spaying female dogs at age 6 months or older is ideal. To avoid pyometra be sure to spay before age 9 months.
It is called a spay if the dog is a female and a neuter if the dog is a male.
They're divorced, so it's possible it was "scrapped".
Probably too many. That's a good reason to spay or neuter your cats or dogs.
No, not unless the other dogs have something and the puppies have not yet been vaccinated. It is time to vaccinate at about 6 weeks old for dogs and cats. This is a good time to spay and neuter the pups also.
There are a very few exceptions, but generally yes, an adopted dog must be spayed.
They do not get sexual urges and are, in general, more calm. Dogs that are spayed or neutered have a tendency to be less aggressive. However, spaying or neutering your dog too late in life may not have these effects on him/her.