Late Summer Dog Symptoms & What They Really Mean

Reverse sneezing is a sudden, forceful inhalation that sounds like a honk or snort. It often looks alarming but is usually harmless. This tends to happen more during changes in temperature and humidity or after a walk in areas with high pollen, grass seeds, or dust.

What’s normal:

• Short episodes lasting less than 30 seconds

  
  
  

• Occasional occurrences, especially after excitement or going outdoors

What’s not normal:

• Frequent episodes throughout the day

  
  
  

• Accompanied by nasal discharge or coughing

• Causing your dog distress or interfering with breathing

If reverse sneezing becomes chronic or seems to worsen with the season, it may be linked to seasonal allergies, airway inflammation, or irritants, and a vet visit is recommended.

2. Grass Allergies

Late summer grasses and weeds can trigger allergic reactions in sensitive dogs. Symptoms can appear suddenly, even in dogs that have had no prior issues.

Common signs of grass allergies include:

• Red or itchy paws (often from walking through grass)

• Excessive licking, chewing, or scratching

• Belly rashes or bumps

  
  
  

• Watery eyes or sneezing

While some irritation is common from rolling or running in grass, persistent symptoms may indicate a contact allergy or environmental sensitivity.

Dogs with seasonal allergies may benefit from a combination of antihistamines, paw rinses, skin-soothing shampoos, or prescription treatments, depending on the severity.

3. Changes in Coat Texture or Thickness

You may notice your dog’s coat looking fluffier, thinner, or duller than usual toward the end of summer. These shifts are part of the natural shedding cycle, but texture changes may also signal health issues.

What’s normal:

What’s not normal:

• Sudden patchy hair loss

• Brittle, greasy, or flaky fur

• Persistent dullness even with a good diet

  
  
  

If your dog’s coat suddenly changes in texture, especially with other symptoms like lethargy or skin irritation, it could point to thyroid issues, nutritional deficiency, or skin infections.

4. Unusual Energy Levels or Mood Shifts

Late summer heat and humidity can make dogs sluggish. However, persistent fatigue or hyperactivity can also relate to overheating, dehydration, or boredom from reduced activity.

If your normally energetic dog becomes withdrawn, or your calm pup starts acting restless, look at routine changes, temperature, and hydration first. If nothing else explains the shift, consider a health check.

5. Itchy Ears or Frequent Head Shaking

Warmer months bring higher humidity and more outdoor activity, which can increase the risk of ear infections, especially in dogs that swim or sweat more through their ears.

Warning signs include:

• Scratching at the ears

• Redness or discharge

• Strong odor

• Head shaking or tilting

If these symptoms appear in late summer, your dog may have moisture buildup or yeast overgrowth, both of which are common seasonal concerns that need veterinary treatment.

Seasonal Symptoms To Take Seriously 

Dogs go through seasonal changes just like people, and many unusual symptoms in late summer are completely normal. However, some signs—including excessive itching, coat texture changes, and reverse sneezing—can be indicators of allergies, infections, or underlying health conditions.

Monitor your dog closely as the seasons shift. If symptoms persist, become severe, or affect your dog’s daily comfort, schedule a veterinary exam. Catching seasonal health issues early can help prevent discomfort and complications as fall approaches.