Is My Male Dog Affected by My Period? (Canine Reactions)

Last Updated on: June 13, 2024

As a pet owner, you may have noticed that your male dog behaves differently, particularly when you’re menstruating. This may have left you wondering, is my male dog affected by my period? 

While male dogs don’t have menstrual cycles, they possess a keen sense of smell and heightened sensitivity to hormonal changes. These may be the reasons for the changes you see in your male dog, and think it knows you’re on your period. 

Nevertheless, research doesn’t prove it does. So, this article explores this heightened canine smell and how you can best understand and manage their behavior during this time.

The Science of Canine Smell

Dogs possess an extraordinary olfactory system, equipped with hundreds of millions of scent receptors in their noses, far surpassing human capabilities. 

As such, a dog’s sense of smell is extraordinary. This incredible ability to detect and analyze scents is rooted in their anatomical and neurological adaptations. It’s the reason dogs thrive regardless of the environment or habitat.

Firstly, the anatomy of a dog’s nose is suitable for scent detection. For example, the nostrils have a complex system of turbinates that are bony structures covered in moist, mucous membranes. These turbinates create a large surface area for scent molecules to bind to, enhancing their ability to capture and process smells. 

Additionally, dogs possess a unique organ called the Jacobson’s or the vomeronasal organ. It allows them to detect pheromones and other chemical signals from other animals, aiding in social and reproductive communication.

Neurologically, a dog’s brain can prioritize smell. A significant part of its brain, including the olfactory bulb, is dedicated to processing scent information. This specialization allows it to discern intricate details within a scent, such as differentiating between individual odors within a complex mixture. 

Dogs can differentiate between diverse odors, from various foods to human scents, drugs, explosives, or even medical conditions like cancer and diabetes. Dogs also have a remarkable memory for smells that enables them to track scents over time and distance, a skill that makes them invaluable in search and rescue missions and hunting.

Is a Male or Female Dog Affected by Its Owner’s Period?

Many assume a male dog can know when its owner is on her period because of its dynamic and adaptable ability to detect smells.

However, does a male dog act weird when a female dog is in its estrous cycle or only when a female pet owner is on her period?

A male canine can sense when a female dog is ready to mate. The estrous cycle, or heat cycle, is a recurring physiological process in female dogs that includes different stages, each marked by specific hormonal changes and behavioral cues. Male dogs can pick up on these cues through their keen senses of smell and other sensory mechanisms.

During the proestrus phase of the estrous cycle, which typically lasts about nine days, the female dog’s body undergoes hormonal changes. It may produce pheromones and release specific scents that signal its readiness to mate. 

Male dogs can detect these pheromones, even from a considerable distance, due to their sensitive olfactory systems. Consequently, they become more attentive and interested in a female during this stage.

The menstrual cycle in humans has hormonal fluctuations, primarily involving estrogen and progesterone. These hormonal changes release specific pheromones and volatile organic compounds (VOCs) dogs may detect. While scientific research on this topic is limited, some male dogs may be sensitive to these subtle hormonal shifts.

How a Male Dog May React to a Pet Owner’s Period

Is my male dog affected by my period, and how is it likely to react? Here are common behavioral changes you may observe in your male dog:

Increased Curiosity

A dog’s increased curiosity when a female owner has her period may result from the unique scents and pheromones associated with menstruation. A male dog can detect even subtle changes in their environment. 

During menstruation, hormonal shifts and menstrual blood may release different odors or pheromones that pique a dog’s interest, increasing curiosity and investigation.

Heightened Attention

This heightened awareness could manifest as increased curiosity, comfort-seeking behavior, or a desire to stay close to their owner during this time. 

While there isn’t extensive scientific research on this topic, anecdotal evidence suggests that some dogs may exhibit more attention and empathy toward their female owners during menstruation, possibly because of their acute olfactory abilities and strong emotional bonds with their humans.


When a female owner has her period, some dogs may exhibit restlessness as they can potentially detect changes in her scent or hormonal fluctuations. This restlessness may manifest as sniffing or nudging the pelvic region or restlessness such as pacing or whining. 

However, it’s important to note that not all dog breeds exhibit these behaviors, and individual variations in canine reactions to menstrual cycles exist.

Protective Behavior

Dogs may exhibit protective behavior when their female owner has her period due to their acute sensitivity to changes in scent and demeanor. 

Additionally, some women may experience discomfort or pain during their period, causing them to act differently or seek more comfort from their pets. 

Dogs may respond by staying close, offering comfort, or displaying protective behaviors to provide support and companionship during this perceived vulnerability.

Increased Affection

Dogs can sense their owner’s emotional state. Hence, a male dog may respond with increased affection to provide companionship and alleviate any perceived distress if the owner is experiencing discomfort or mood swings associated with their period.

Submissive Behavior

A male dog may exhibit submissive behaviors, such as lowering its head, tucking its tail, or rolling onto its back. It might do this alongside other acts like showing affection and being protective.

Agitation or Irritability

Some dogs may become agitated or irritable, possibly due to the changes in your scent. They might be more easily triggered by external stimuli or exhibit minor irritability.

Anxiety or Stress

Hormonal changes in your body can affect your dog’s stress levels. As such, your male dog may experience mild anxiety or stress during your period, which could lead to behaviors like excessive licking or panting.

Change in Eating Habits

A few dogs may change their eating habits by over or underfeeding in response to their owner’s menstrual cycle. The cause might be the anxiety, stress, and agitation they may experience during those days.

Increased Vigilance

Dogs with a strong protective instinct may become more vigilant and attentive to their surroundings during your period because they perceive your vulnerability.

What to do If Your Dog is Aggressive when You’re on Your Period

If your dog exhibits aggressive canine behavior during your period, address the issue promptly to ensure you and your dog are safe. These behaviors stem from various factors, and it’s crucial to identify the underlying cause and work on a solution. Here are steps to take if your pet acts aggressively when you’re menstruating:

Consult a Veterinarian

Consult a veterinarian to rule out any underlying medical issues contributing to your dog’s aggression. For instance, pain or discomfort from an undiagnosed medical condition can make your male dog act weird.

Observe the Triggers

Pay close attention to the circumstances surrounding your pet’s behavior. Is it specific to when you’re on your period, or are other factors involved, such as stress, fear, or territorial behavior

Further, maintain a safe distance and exercise caution when dealing with an aggressive dog. Aggression in dogs can vary in intensity and may escalate quickly, so prioritize your safety and that of others. 

Seek Professional Help

If your dog’s aggression is severe or you’re unable to determine the cause, consider enlisting the help of a professional trainer or behaviorist. They can assess your dog’s behavior and develop a tailored modification plan. Behavioral training is valuable in managing stress, especially for dogs with specific fears or anxieties. 

Techniques like desensitization and counterconditioning can help change your dog’s emotional response to stress triggers.

These techniques involve gradually exposing your dog to situations that trigger aggression but at a level where they don’t react aggressively. For example, if your dog is aggressive towards other dogs, start by having them at a distance from other dogs and reward them for calm behavior. Gradually decrease the distance over time.

Positive Reinforcement Training

It’s essential to focus on building trust and encouraging more appropriate behavior. Hence, reward your furry friend for calm and non-aggressive behavior during your period, gradually reinforcing positive associations.

Create Safe Boundaries

Create a safe space where your dog can relax and be separated from you if necessary. It can be a crate, a specific room, or a cozy bed. Provide the pet with favorite toys, blankets, and familiar scents to make this space even more comforting. Further, use baby gates to ensure your safety and your dog’s well-being. 

Supervise Interactions

Always supervise interactions between your furry friend and others, especially during your period, to prevent aggressive incidents when your male dog acts weird. On top of that, be cautious when handling or approaching your dog to avoid triggering aggression.

Manage Stress and Anxiety

Some dogs may become more anxious or stressed during their owners’ menstrual cycles. Consider implementing stress-reduction techniques such as providing interactive toys, exercise, or calming supplements, but consult your vet before using any supplements.

Consistency and Patience

Consistency in training and patience are key. Changing a dog’s behavior takes time, and it’s essential to remain calm and composed when dealing with an aggressive male dog. 


If your male dog is intact (not spayed or neutered), consider discussing the option of spaying or neutering with your veterinarian. Hormonal changes can sometimes make your dog aggressive.


While the extent to which male dogs are affected by their owner’s period can vary, it’s clear that their heightened sense of smell allows them to detect subtle changes in hormonal scents. 

Understanding and managing your pet’s behavior during this time can help ensure a harmonious relationship between you and your loyal companion.

Remember that each dog is unique, and their responses may differ, so pay attention to your dog’s cues and provide the appropriate care and attention they need.


Do male dogs react to human periods?

Male dogs may detect hormonal changes and scents associated with a human’s menstrual cycle due to their acute sense of smell.

Can male dogs sense human female ovulation?

There’s limited scientific evidence to suggest that male dogs can detect changes in human female ovulation.

Do dogs get aggressive before their period?

Female dogs do not have menstrual cycles like humans; they have an estrous cycle.

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