A heat cycle in a female dog typically lasts between two and three weeks from the first sign until it is all over. However, the question of how long dogs are in heat does not have one clear-cut answer, because the duration varies from dog to dog. Some are quickly through in a little over two weeks, while others stretch the period out to three weeks or more. The key point is that heat is not one long, uniform state, but a process in phases, where bleeding, behaviour and fertility all change along the way. Once you know the phases, it becomes far easier to read where your female is in the process, and how best to support her.
Heat typically lasts two to three weeks
If you count from the day the first signs appear until the dog has settled down completely again, you most often end up with a total duration of two to three weeks. The period during which the dog bleeds and is clearly affected makes up a large part of that time, but the exact length is individual. Breed, age and the individual dog's hormone balance all play a part, and the first heat cycles during puberty in particular can be irregular and hard to read. That is why it is wise to keep a small calendar of your female's heat cycles. Over time, a pattern emerges that enables you to predict when the next one is due, and how long it usually lasts for your particular dog.
The four phases of a heat cycle
The heat cycle is divided into four phases, and it is the shift between them that explains why the duration is experienced so differently. The first phase is called proestrus. Here the external genitals swell, and the dog develops a bloody discharge. This phase typically lasts around nine days, but can range from a few days to nearly two weeks. During this period the female attracts male dogs but still rejects them and is not yet willing to mate.
This is followed by the actual heat, estrus, when the dog is fertile and receptive. The bleeding often decreases and becomes lighter, and the female now accepts advances. This phase typically lasts around nine days and includes the days when the risk of mating is greatest. This is when you need to be most attentive if you do not want puppies. After estrus comes metestrus, when the body settles down again, whether or not the dog has become pregnant. Finally comes the long resting phase, anestrus, when the reproductive organs are completely at rest until the next heat cycle. Precisely because the three active phases blend into one another, it can be difficult to say exactly when the heat cycle begins and ends, and this is a large part of the explanation for why the answer to the duration never becomes entirely exact.
How often does a female come into heat?
Most females come into heat about twice a year, with an interval of typically six to eight months between each one. There is, however, considerable variation. Some small breeds may come into heat more frequently, while certain large breeds and a few individual breeds only have heat once a year. A female comes into heat all her life, because dogs do not go through menopause the same way humans do, but the intervals can become longer and more irregular as the dog grows older. For many, the first heat cycle appears around half a year to a year of age, but in large breeds it may not come until the dog is one and a half to two years old. If you experience very irregular heat cycles, heavy bleeding or other things that concern you, you should always contact your vet for an assessment.
How to support your dog through heat
A female in heat needs a little extra calm and consideration. Many dogs become more clingy, restless or changeable in mood, and some lose a bit of their appetite at times. Keep walks on a leash and in places with fewer loose male dogs, and give her space to rest when her energy fluctuates. If appetite and daily wellbeing are important to you during this sensitive period, it comes down to serving meals the dog wants to eat and that keep her everyday life in balance. Here the well-thought-out dog meals from ESSENTIAL FOODS are a good starting point, because they are prepared from fresh produce and human-grade ingredients with the dog's taste and wellbeing in mind. If you want to let her taste her way forward, a selection of trial meals can make it easy to find what she prefers, while she is a bit more picky than usual.
If your female has a slightly sensitive stomach that becomes extra delicate when the hormones are running, it may be worth taking a closer look at meals composed with gentle digestion in mind. In the sensitive stomach collection you will find relevant meals gathered with the more sensitive stomach in mind. If you are unsure what suits your particular dog best through heat, ESSENTIAL FOODS' nutrition advisers are ready on phone, chat and email and are happy to help you choose the right meals. They advise on feeding, food and nutrition, while questions about your dog's health belong with the vet.
When heat can lead to pregnancy
If your female is mated during the fertile days of estrus, the heat cycle can end in a pregnancy, and then her needs change markedly. A pregnant and later nursing female needs a nutrient-rich foundation, just as the coming puppies quickly develop their very own requirements for feeding. If you are considering a pregnancy, or you have a coming litter, it is worth preparing in good time. For the finest beginning, the BEGINNING series is created with luxurious, grain-free puppy meals made from fresh produce, human-grade ingredients and carefully selected local and regional delicacies, entirely without grain and unnecessary fillers. You will find the full range in the puppy & junior collection. If you are soon welcoming puppies, you can also delve into ESSENTIAL FOODS' puppy universe, where the advice comes directly from ESSENTIAL FOODS and helps you get off to a good start with the new little family.
Whether the heat cycle ends with puppies or simply runs its quiet course, the best thing you can do is get to know your own dog's rhythm. When you know how long her heat cycle typically lasts, how often it comes, and how she feels along the way, the period becomes far more manageable for you both. Then you can support her with calm, good meals and a little extra attention, exactly when she needs it.