V. Dogs and Cats: Estrus/Heat

First Cat Estrus & Dog Estrus Signs

It will no doubt be easy to tell when your young female animal companion reaches sexual maturity and goes into her first estrus, or heat cycle. This usually occurs when an unspayed female cat is about six months old and when an unspayed female dog is 6 to10 months old.This signals that your pet is ready to look for a mate.

Affectionate Cats in Heat

You may notice that your cat becomes very affectionate, rolls around on the floor and seems unusually restless when in heat. Felines in their estrus cycle will exhibit increased vocalization. This howling and calling is an attempt to attract potential suitors. As she becomes more and more frustrated, your indoors-only cat will probably try her utmost to escape. Unless they are spayed, sexually mature female cats can come into heat multiple times each year depending on climate and other factors.

How Long Are Dogs in Heat?

An unspayed female dog usually goes into heat twice yearly for three weeks at a time. Her vulva will become swollen, and there will be a clear, then bloody discharge. Over a period of about ten days, the flow will increase and then gradually diminish. While in their estrus cycle, female dogs may seem nervous, easily distracted and more alert. They may urinate more frequently than usual. Soon after the discharge has stopped, the female begins to ovulate. Dogs typically have an estrus cycle every six months, although there are some breed and individual variations.

When to Spay and Neuter

Considering the millions of animals euthanized at shelters annually, it is irresponsible to let your pet mate with the opposite sex when there already are too many animals and not enough homes. Contrary to what some people believe, there are no health benefits in allowing your animal companion to have litter before she is spayed. In fact, the rigors of giving birth and raising a litter definitely take a toll on a female dog or cat, and can lead to premature aging and, in some cases, death. ANIMED and other humane organizations recommend spaying or neutering your dog or cat as early as 2 months, if possible.