Cancer is a devastating disease that can affect both humans and our beloved canine companions. Interestingly, research shows that dogs naturally develop many of the same types of cancer as humans.1
Early detection is important for successful treatment and improving a dog’s chances of survival.
With that in mind, here are five early warning signs of cancer in dogs that every pet owner should be aware of.
1. Unexplained Lumps & Bumps
One of the most common early signs of cancer in dogs is the appearance of unexplained lumps or bumps under their skin. These lumps can vary in size, shape, and texture.
While not all lumps are cancerous, it’s essential to have them examined by a veterinarian as soon as possible to rule out any potential malignancy.
2. Changes in Appetite or Weight
A sudden decrease in appetite or unexplained weight loss can be an early indicator of various types of cancer in dogs.
If your dog is losing weight despite eating normally or showing disinterest in food, it’s important to seek veterinary attention to determine the underlying cause.
3. Wounds That Won’t Heal or Sores That Don’t Resolve
Non-healing wounds or sores that don’t resolve after several weeks can potentially indicate skin cancer, especially if they are located in sun-exposed areas. Warning signs of cancerous wounds include:
- Sores that don’t heal within 4 weeks, bleed easily, or repeatedly scab over
- Shiny bumps or patches that may be pink, red, pearly white, or translucent
- Raised reddish patches that may itch or crust
- Crater-like ulcers or raised nodules with irregular borders
- Rough, scaly red patches
- Sores with abnormal colors like blue, brown, or black
Basal cell carcinoma and squamous cell carcinoma, the two most common skin cancers (ref), often appear on sun-exposed skin as shiny bumps, red scaly patches, or persistent open sores. Melanoma, a more serious skin cancer, can develop as a new or changing mole.
4. Difficulty Breathing or Coughing
If your dog is experiencing difficulty breathing, coughing persistently, or wheezing, it could be a sign of lung cancer or other respiratory issues.
Consult with your veterinarian promptly if you notice any of these symptoms in your dog. Early detection is crucial for successful treatment of lung cancer in dogs.
5. Lethargy & Decreased Activity
A sudden decrease in energy levels, lethargy, and reluctance to participate in activities that your dog usually enjoys can be a general sign of illness, including cancer. If your dog is showing a significant change in activity level, it’s important to consult with a veterinarian to rule out any underlying medical conditions.
These signs are not exclusive to cancer and can be indicative of other health issues as well. However, if you notice any of these signs in your dog, it’s crucial to seek veterinary attention promptly for a thorough examination and diagnosis.
Early detection of cancer increases the chances of successful treatment and can give your furry friend a better quality of life.
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Davin is a jack-of-all-trades but has professional training and experience in various home and garden subjects. He leans on other experts when needed and edits and fact-checks all articles.