At What Age Does A Dog Stop Going Into Heat

At What Age Does A Dog Stop Going Into Heat


Dogs come in a long list of shapes and sizes. But whether you’re the proud owner of a Chihuahua or Great Dane, you will want to know how old they are before they go into heat. You may have heard that all dogs “go into heat” when they reach six months old. The truth is, there are many factors that determine when a dog reaches sexual maturity and goes through their first estrus cycle (also called “going into heat”). In this article, we’ll discuss the age at which dogs usually go into heat and what you can do to keep your pup healthy.

How Old Does a Dog Have to Be to Go Into Heat?

When a dog goes into heat, she will have an increase in her hormones, which leads to an increase in her libido. This means that she will be more interested in mating with dogs.

The age at which a dog begins to go into heat varies by breed and size, but the average age is between 9 months and 15 months. Some dogs may start as early as 5 months, while others may not start until they are almost 2 years old!

The First Heat Cycle

The first heat cycle is basically the equivalent of a human female’s puberty, and it can be a bit confusing for owners.

The reason this period is called a “cycle” is because females are pregnant for about 60 days. Since dogs have heat cycles twice a year, it can be confusing to know when your dog will have her next litter if you don’t keep track of her cycles.

The most common symptom of heat in canines is an increase in frequency and duration of urination; however, some dogs also experience excessive thirst and appetite changes during this time as well. Other signs include restlessness and pacing around the house or yard while whining or howling at night (in other words: no sleep). Owners should seek professional help if their canine friend shows any sign of aggression during this period because mating behavior often occurs at the same time as hormonal changes occur within their bodies which may lead towards aggressive tendencies due to hormones like estrogen being released into their bloodstreams causing them to act out violently towards others not just themselves even though they might not actually want anyone else around them other than maybe another dog who also wants something physical with them at that moment too but definitely not any human beings nearby watching over them carefully waiting patiently until everything goes back down again after all has been said done done

Age of the Heat Cycle

The age at which a dog stops going into heat, or the length of their heat cycle, is different for different breeds and individual dogs. The average age for the first heat cycle is 6 months with some dogs experiencing it as early as 5 1/2 months. A second heat cycle usually occurs between 8 1/2 and 10 months old, while the third generally begins around 13-14 months of age.

The length of time during which your dog will go into heat will vary depending on what type of breed she is. For example, females who are mixed breed may have an extended first season because they weren’t bred specifically for their breeder’s goals – this can be anywhere from 6-15 months depending on how much longer it takes for her body to mature fully enough for breeding purposes.


Dogs can get pregnant at any age, and it is not uncommon for dogs to become pregnant before they go into heat for the first time. Dogs can also get pregnant after being spayed or neutered.

It’s important to note that if your dog has been spayed or neutered, but still shows signs of going into heat (like excessive urination), she may actually be pregnant. If you think your dog might be carrying a litter of puppies, contact your vet right away so that they can help you figure out what’s going on with her body!


Spaying is a surgical procedure to remove the uterus and ovaries. It’s usually done when female dogs are between four and six months old.

Spaying is a good idea for all female dogs, because it can prevent the risk of cancer in your pet. Spaying can also prevent unwanted pregnancies, which reduces the risk of uterine infection or unwanted puppies that need to be adopted out later on down the line.

There is a lot of misinformation on the internet about dogs. It is important to have sources that you can trust.

As a dog owner, it is important to have sources that you can rely on. For example, if your dog has stopped going into heat and you want to know why, there are many websites that claim to have answers. However, keep in mind that dogs are individuals, and they may not follow the same pattern as other dogs. If you have any questions about your own dog or its health, ask a professional veterinarian for help!


While the topic of dog heat cycles is not a pleasant one, it is an important subject for any dog owner. Female dogs go into heat about twice a year, starting as early as six months old. To make sure your female dog gets the care she needs during this time, you should know about her breed’s average heat cycle length and how to spot signs that she may be coming into heat soon. You also need to have a plan for managing her during this time. Spaying or neutering can prevent unwanted pregnancies and help keep her healthy throughout life after reaching sexual maturity at around two years old (or earlier in some smaller breeds). In addition, there will likely be times when you need to reduce exposure to male dogs in your home or neighborhood until the danger passes.

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