Border Collies are playful, affectionate dogs, but they are not your typical breed. They would prefer to have a job since they need a lot of attention, care, and dedication from their human companions. If a female Border Collie is not spayed, owning one also requires planning for and controlling their heat cycles.

Although this is not a hard and fast rule, most Border Collies experience their first heat at around half a year old. Some Border Collies can experience their first heat as early as six months, while others may do so later, at or near one year. Here, there is no correct or incorrect timeline.

Female Border Collies that have “early” or “late” heat cycles may still be in good health compared to those that experience heat at the typical 6- to 8-month mark. Understanding your Border Collie’s heat cycles and the symptoms of those cycles can help you be ready to provide the appropriate care and attention when required.

How Frequently Do Border Collies Go into Heat?

Two heat cycles per year, spaced roughly six months apart, are the norm for female Border Collies. Nevertheless, some canines only go into heat once a year, while others go much longer. Size, food, lifestyle, and health are just a few of the factors that influence when a dog goes into heat. Before timing settles into a rhythm and owners can reliably estimate when a cycle will start, it may take a few cycles. It’s vital to remember that, in contrast to humans, dogs do not experience menopause and will continue to experience heat cycles for the duration of their lives.

How Do Border Collies Go Through Their Heat Cycle?

The Border Collie’s heat cycle has four stages, and it’s crucial to comprehend each one in order to appropriately care for and shield your dog against unintended pregnancies.

Stage 1: Proestrus

Normally, the initial phase of the heat cycle lasts 7 to 10 days. The female’s body is preparing for ovulation and insemination at this time. The vulva may shed blood during the proestrus stage. The majority of females are not yet ready to mate, thus they may act aggressively toward males who approach them.

Stage 2: Estrus

A female Border Collie is fertile and able to mate successfully with a male during the estrus period. A female may look for a male to mate with during this period, which typically lasts between 5 and 10 days.

Stage 3: Diestrus

Typically, this phase lasts 10 to 90 days. The female will no longer be open to the male due to the hormonal changes. The female may or may not be pregnant depending on the circumstances that emerged during the estrous cycle.

Stage 4: Anestrus

Due to the fact that it is the resting stage, this is the longest phase of a Border Collie’s heat cycle. Regardless of how long that may be, the anestrus phase lasts from the last day of diestrus to the first day of proestrus. Your dog shouldn’t be showing any signs of being in heat right now.

How Do I Tell If My Border Collie Is In Heat?

A Border Collie in heat has brief physical and behavioral changes as a result of her hormones. These alterations cease and normally disappear when a female enters oestrus.

Your dog may be getting ready to go into heat if she exhibits any of the following behaviors:

  • Vulva enlargement and erythema
  • pink or a reddish discharge
  • increased vaginal licking due to anxiety
  • Mood changes
  • aggressive or submissive actions
  • Frequent urination and agitation
  • alterations in body odor alterations in energy
  • An alternative tail posture
  • mattress with traces of blood

Although every dog is unique, most female Border Collies show at least one indicator of being in heat. While some may display several symptoms, others may just show one or two. Even siblings will exhibit different symptoms from one another.

How Are Border Collies To Be Treated While In Heat?

To prevent unwanted pregnancies and to preserve your Border Collie’s comfort throughout her cycle, it’s crucial to give her additional attention while she is in heat. Here are some suggestions you may utilize to make sure your dog is safe, happy, and healthy.

1. Don’t permit unsupervised outdoor time

Even if your yard is completely fenced, you should never leave your female Border Collie outside when she is in heat without constant monitoring. Males who are not constrained can recognize females who are in heat, and they will use any means necessary to approach these females. When your dog is in heat, her yard is not safe for her. When she is in her estrus phase, your dog can even attempt to flee in an effort to locate a mate. It will be easier to prevent her from escaping and other dogs from invading your property if you keep her on a leash and/or keep a watch on her.

2.Never permit leash-free exploration.

Even though your Border Collie typically does a wonderful job of sticking by your side while you are outside, you shouldn’t trust her when she is in heat. Her hormones can cause her to act contrary to what she would like to do if it means finding a mate to have children with, even though she tries to be kind and follow your instructions. As a result, you should always keep your dog on a leash anytime you are in a public place, and avoid dog parks at all costs.

3. Maintain access to cleaning supplies

While your dog is in heat, there’s a good chance that things will get a little messy. She will probably be discharged blood, which can get on the floor and other things in your house. She might also leave blood stains on her sheets and other places where she sleeps. So that you can wipe up spills as they happen, it is a good idea to keep paper towels and disinfectant close at hand. To reduce messes, some owners favor using “doggy diapers” throughout the heating stage.

4.Add More Activities Throughout the Day

More activities and “brain games” should always be incorporated into her day. Border Collies are naturally energetic dogs, so leaving them unattended while they are in heat could result in problems. Playing catch, hide-and-seek, and using puzzle toys can keep your dog occupied and divert her attention away from any potential discomforts associated with her heat cycle.

5. Become more patient

A Border Collie in heat may exhibit mood swings and aggressive behavior against other family pets. When dealing with undesirable actions, it’s crucial to exercise patience because penalizing her would be unfair and ineffective. Her behavior is quite normal, and she merits respect and compassion while going through her heat cycle.


You can plan, get ready, and take the necessary steps to guarantee that your Border Collie will live a long, happy, and healthy life now that you know when she should have her first heat, how frequently she will go into heat, and the indicators to look for that indicate that her heat cycle has arrived. Although the initial heat cycles can be intimidating, things should become simpler and more efficient over time.