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The Reproductive Cycle

At what age can I spay or neuter my dog or cat?
We generally recommend spaying and neutering dogs and cats at six months of age. Spaying your dog or cat at 6 months of age and before her first heat cycle decreases the incidence of life-threatening mammary tumors and uterine infections. Neutering your dog or cat at this age protects him from developing aggressive behaviors and potentially life-threatening prostate disease. Obviously spaying and neutering helps decrease the number of unwanted puppies and kittens that overwhelm our humane societies.

How will the surgery affect my dog or cat?
There are no adverse effects of spaying or neutering pets. Male dogs and cats will become less territorial and aggressive. Weight gain, which is often erroneously associated with neutering and spaying is more accurately due to the slowing of the animal's metabolism as it reaches adulthood.

My dog/cat just had puppies/kittens. When can she be spayed?
We recommend spaying your pet about 2 weeks after the puppies/kittens are weaned.

Should my dog/cat have puppies/kittens first before being spayed?
No. There are no medical benefits associated with an animal have a litter or puppies/kittens prior to being spayed. In fact there is an increase risk of developing mammary tumors with each heat cycle.

What is the normal gestation length for dogs/cats? The gestation period (length of pregnancy) on average is 63 days.

How old is too old for a dog/cat to be spayed or neutered?
While technically a cat or dog can be spayed/neutered at any age, it is best to perform the surgery while the animal is young and healthy to reduce anesthetic and surgical risks.

My dog just got bred by mistake. What should I do?
You have 2 options. You can have the dog spayed as soon as possible, or you can allow the dog to continue the possible pregnancy.


What is a spay and what are the benefits?

A spay, or ovariohysterectomy, is the surgical removal of the ovaries and the uterus. The benefits are pet population control, elimination of the risk of uterine infections, and a decreased risk of the incidence of mammary tumors especially if done prior to the first heat cycle.

Can a dog/cat be spayed while in heat?
We recommend against spaying a dog that is in heat but it can be done. During this time the ovaries and uterus are swollen and filled with blood, increasing the risk of hemorrhage. We prefer to wait until about 4 weeks after your dog goes out of heat to perform surgery. We can spay cats that are in heat.

What is a neuter and what are the benefits?
Neutering is the surgical removal of both testicles. Benefits include pet population control, reduction in prostate cancer and infections, reduction of perianal tumors, and reduction in territorial/aggressive behavior.

At what age does a dog come in heat? How often? How long?
The age of onset of the heat cycle varies with the breed of dog. Small breeds tend to begin cycling sooner, as early as six months of age. Larger breeds begin later, sometimes not until 12-18 months of age. Heat cycles then occur approximately every six months and last approximately three weeks.

At what age does a cat come in heat? How often? How long?
Cats can come into heat as early as six months of age. Increasing day length stimulates them. During the spring and summer, female cats will be receptive to breeding for several days. This will continue to cycle about every 2 weeks or until the cat is bred. The heat cycle will end with coming of fall and decrease in day length.