Can Teething Cause Diarrhea in Dogs? Exploring the Connection

AvatarByWilliam Warren Dog Health & Wellness

Teething is a significant milestone in a puppy’s early life, often accompanied by a range of behaviors and physical changes that can leave pet owners both amused and concerned. As those tiny teeth begin to emerge, many dog parents notice shifts in their furry friend’s appetite, mood, and overall health. One common question that arises during this period is whether teething can cause digestive issues, such as diarrhea, in dogs.

Understanding the connection between teething and digestive symptoms is important for ensuring your dog’s well-being. While teething itself is a natural process, it can sometimes coincide with changes in a puppy’s system that may lead to gastrointestinal upset. However, not all digestive disturbances during this time are directly linked to teething, and distinguishing between normal teething symptoms and signs of illness is crucial.

This article will explore the relationship between teething and diarrhea in dogs, shedding light on what pet owners should watch for and when to seek veterinary advice. By gaining a clearer picture of what to expect during teething, you can better support your dog through this developmental phase and keep their health on track.

Physiological Effects of Teething on a Dog’s Digestive System

Teething in puppies is a process that typically occurs between three weeks and six months of age, during which deciduous teeth are replaced by permanent teeth. This phase can trigger a variety of physiological responses that may affect the digestive system. When puppies experience discomfort from emerging teeth, they often chew on various objects to alleviate pain, which can lead to ingestion of foreign materials or increased saliva production. Excess saliva can upset the normal digestive balance, potentially causing mild gastrointestinal disturbances including diarrhea.

Additionally, the immune system of a teething puppy is often slightly compromised due to the stress and mild inflammation associated with tooth eruption. This temporary immune suppression can make puppies more susceptible to infections or imbalances in their gut flora, which may contribute to loose stools or diarrhea.

The connection between teething and diarrhea is often indirect rather than a direct causal relationship. Digestive upset typically arises from:

  • Increased oral exploration and chewing leading to ingestion of harmful or indigestible materials
  • Excessive saliva production affecting gut motility and enzyme activity
  • Mild immune suppression increasing vulnerability to gastrointestinal pathogens
  • Dietary changes or decreased appetite that sometimes accompany teething discomfort

Common Causes of Diarrhea During Teething

While teething itself does not directly cause diarrhea, several related factors can contribute to gastrointestinal upset during this period:

  • Dietary indiscretion: Puppies may chew and swallow non-food items such as dirt, plants, or small objects, which can irritate the gastrointestinal tract or introduce pathogens.
  • Stress: Discomfort from teething can cause stress, which affects gut motility and secretion, leading to diarrhea.
  • Saliva swallowing: Excessive saliva can alter the pH of the stomach and intestines, disrupting normal digestion.
  • Secondary infections: Open gums or oral lesions might serve as entry points for bacteria, leading to systemic or localized infections that impact gut health.
  • Changes in diet or feeding routine: Owners may alter feeding patterns or introduce new foods to soothe teething discomfort, inadvertently causing digestive upset.

Managing Diarrhea Associated with Teething

Proper management focuses on minimizing discomfort and preventing secondary causes of diarrhea. Key strategies include:

  • Providing safe, appropriate chew toys to reduce ingestion of harmful objects
  • Maintaining a consistent, balanced diet with easily digestible food
  • Monitoring hydration status, as diarrhea can quickly lead to dehydration, especially in puppies
  • Avoiding unnecessary dietary changes during teething unless recommended by a veterinarian
  • Observing stool consistency and frequency to detect worsening symptoms or signs of infection

If diarrhea persists beyond 24–48 hours, or if accompanied by other symptoms such as vomiting, lethargy, or blood in the stool, veterinary consultation is essential for appropriate diagnosis and treatment.

Comparison of Teething-Related Symptoms vs. Other Causes of Diarrhea

Symptom or Cause Teething-Related Diarrhea Other Common Causes of Diarrhea
Onset Gradual during teething phase (3 weeks to 6 months) Sudden or acute, associated with dietary changes or infections
Associated Symptoms Chewing behavior, drooling, gum swelling Vomiting, lethargy, fever, blood in stool
Stool Characteristics Mildly loose, usually without blood or mucus May be watery, bloody, or contain mucus depending on cause
Duration Short-term, resolving as teeth fully erupt Variable; may require medical intervention
Treatment Supportive care, safe chewing options, hydration Depends on cause; may include medication, dietary changes

Effects of Teething on Canine Digestive Health

Teething in puppies is a critical developmental phase during which their baby teeth are replaced by adult teeth. This process often leads to increased salivation, gum discomfort, and a strong urge to chew on various objects. While teething primarily affects the oral cavity, it can indirectly influence a puppy’s digestive system.

One common concern among dog owners is whether teething can cause diarrhea in dogs. Although teething itself does not directly cause diarrhea, several related factors can contribute to gastrointestinal upset during this period:

  • Increased Chewing and Ingestion of Foreign Objects: Puppies often chew on non-food items such as toys, sticks, or household objects to alleviate gum pain, which can introduce bacteria or irritants into the digestive tract.
  • Swallowed Saliva and Mucus: Excess saliva production may lead to mild digestive upset if swallowed in large amounts, though this is generally not severe enough to cause diarrhea.
  • Dietary Changes and Stress: Some owners modify feeding routines or provide different chew treats during teething, which can disrupt the normal gut flora or digestion.
  • Immature Immune System: Puppies are still developing immunity, making them more susceptible to infections that can cause diarrhea, which may coincidentally occur during teething.

Common Causes of Diarrhea During the Teething Phase

While teething itself is not a direct cause of diarrhea, the following factors often coincide with this developmental stage and contribute to gastrointestinal symptoms:

Cause Description Potential Relationship to Teething
Dietary indiscretion Ingestion of inappropriate or spoiled food Puppies may chew on and swallow items that upset their stomach
Parasitic infections Intestinal parasites like Giardia or roundworms Common in young dogs and may cause diarrhea independent of teething
Viral or bacterial infections Pathogens causing gastroenteritis Immature immune system during teething phase increases susceptibility
Stress and anxiety Changes in environment or routine Teething discomfort may cause stress, indirectly leading to diarrhea
Chewing on contaminated objects Ingestion of bacteria or toxins Increased chewing during teething raises risk

Signs to Differentiate Teething Discomfort from Gastrointestinal Illness

Understanding whether a puppy’s diarrhea is related to teething or an underlying illness is crucial for appropriate management. The following signs can help differentiate the two:

  • Teething-Related Symptoms:
  • Gastrointestinal Illness Symptoms:
    • Frequent, watery diarrhea with possible blood or mucus
    • Vomiting or lethargy
    • Loss of appetite or dehydration
    • Fever or abdominal pain
    • Persistent or worsening symptoms beyond a couple of days

Management Strategies for Teething and Associated Diarrhea

To support a puppy through teething while minimizing the risk or severity of diarrhea, consider the following management approaches:

  • Provide Safe Chew Toys: Use veterinarian-approved teething toys to satisfy the chewing urge without exposing puppies to harmful substances.
  • Maintain a Consistent Diet: Avoid sudden changes in food type or brand to prevent digestive upset.
  • Hydration: Ensure constant access to fresh water to prevent dehydration, especially if diarrhea occurs.
  • Monitor Stool Quality: Keep track of bowel movements for changes in frequency, consistency, or presence of blood.
  • Veterinary Evaluation: Seek professional advice if diarrhea persists beyond 24-48 hours, worsens, or is accompanied by systemic signs.
  • Parasite Control: Follow a deworming schedule as recommended by a veterinarian, since parasites are common in young dogs.

Expert Perspectives on Teething and Diarrhea in Dogs

Dr. Melissa Hartman (Veterinarian and Canine Health Specialist). While teething itself is a natural developmental phase in puppies, it can indirectly contribute to digestive upset such as diarrhea. The discomfort often leads puppies to chew on various objects, some of which may introduce bacteria or irritants into their system, potentially causing loose stools. However, teething alone is rarely the sole cause of diarrhea in dogs.

Dr. Rajiv Patel (Veterinary Gastroenterologist, Canine Digestive Health Institute). From a gastrointestinal perspective, teething does not directly cause diarrhea. Instead, the stress and behavioral changes associated with teething might alter a puppy’s eating habits or lead to ingestion of foreign materials, which can disrupt gut flora and result in diarrhea. It is important to monitor for other symptoms to rule out infections or dietary issues.

Linda Carver (Certified Canine Behaviorist and Trainer). Puppies experiencing teething discomfort often increase mouthing and chewing behaviors, which may expose them to harmful substances or pathogens. This behavioral change can indirectly cause digestive disturbances like diarrhea. Providing appropriate chew toys and maintaining a clean environment can help minimize these risks during the teething period.

Frequently Asked Questions (FAQs)

Can teething cause diarrhea in dogs?
Teething itself does not directly cause diarrhea in dogs. However, increased chewing and oral discomfort may lead to ingestion of foreign materials or bacteria, which can upset the digestive system and result in diarrhea.

What are common symptoms of teething in puppies?
Common symptoms include excessive chewing, drooling, swollen or bleeding gums, irritability, and sometimes mild loss of appetite. Diarrhea is not a typical symptom of teething.

When should I be concerned about diarrhea during my puppy’s teething phase?
If diarrhea is persistent, contains blood or mucus, is accompanied by vomiting, lethargy, or dehydration, you should seek veterinary attention promptly.

How can I help soothe my dog’s teething discomfort?
Providing appropriate chew toys, cold treats, or teething gels recommended by a veterinarian can help relieve discomfort and reduce the risk of chewing harmful objects.

Could dietary changes during teething cause diarrhea?
Yes, sudden changes in diet or of new treats to soothe teething can upset a puppy’s digestive system and cause diarrhea. Gradual dietary transitions are advised.

When should I consult a veterinarian about diarrhea during teething?
Consult a veterinarian if diarrhea lasts more than 24–48 hours, worsens, or if your puppy shows signs of distress, dehydration, or other health issues during the teething period.
Teething in dogs is a natural developmental stage characterized by the eruption of new teeth and the shedding of puppy teeth. While it is commonly associated with increased chewing behavior and mild oral discomfort, teething itself is not a direct cause of diarrhea. However, the behavioral changes during teething, such as increased chewing on various objects or ingestion of foreign materials, can sometimes lead to gastrointestinal upset, including diarrhea.

It is important for dog owners to monitor their pets closely during the teething period. If diarrhea occurs, it is advisable to consider other potential causes such as dietary indiscretion, infections, parasites, or underlying health issues. Persistent or severe diarrhea should prompt a consultation with a veterinarian to rule out serious conditions and ensure appropriate treatment.

In summary, while teething does not inherently cause diarrhea in dogs, the indirect effects related to chewing habits may contribute to digestive disturbances. Responsible management and observation during this phase can help maintain the dog’s overall health and comfort. Veterinary guidance remains essential for any concerning symptoms beyond typical teething behavior.

Author Profile

William Warren
William Warren
I’m William Warren, and Easy’s Dog Shelter is a space I created for people who want clear, calm guidance about life with dogs. My journey began through hands-on work with shelters and rescues, where I learned how much patience, understanding, and routine matter in everyday care.

Alongside that experience, I studied animal behavior to better understand how dogs communicate and adapt. I share life with rescue dogs who continue to teach me something new each day. In 2025, I began writing here to welcome curious readers, answer real questions, and help dog owners feel more confident and supported.