How to Know if Your Dog Has Cancer

Learn the early signs of canine cancer to keep your dog as healthy as possible.

Cancer is the leading cause of death in dogs over the age of 10. However half of all cancers are treatable if caught early, professionals say. WebMD spoke with Dave Ruslander, a veterinary oncologist and previous president of the Veterinary Cancer Society, about canine cancers and the most recent treatments for dogs diagnosed with the disease.

Here are early warning signs of canine cancer that dog owners can’t ignore:

Tumors, Mysterious Swellings, and Unusual Growths

Although it’s probably the first symptom you think of when you hear the word “cancer,” tumors are not always cancerous. As dogs age, they are more likely to develop fatty deposits and other benign lumps. However some growths can be deadly, and tumors can signal skin cancer, mammary cancer, and other types of disease.

You can perform a monthly “lump check” to keep track of your dog’s lumps and bumps. This is specifically important for older dogs who establish benign developments all the time. With practice, you’ll most likely learn to tell the difference in between a benign fatty deposit and a more worrying development. However if a new lump or bump establishes, it’s a good idea to contact your expert vet just in case.

Wounds That Won’t Heal

Like tumors, persistent wounds can be signs of unusual cell growth in your dog’s system. Usually, a little wound or sore need to heal in time, with noticeable signs of healing (i.e. scabbing and skin and hair regrowth). If your pet has a recurring sore or injury that just won’t recover, it’s time to see the veterinarian.

Sudden Lameness

“Lameness” is a change in your dog’s regular gait. It might provide as inflammation and subtle pain, hopping or favoring a limb, or in severe cases, the failure to place any weight on the limb. Generally, lameness = pain, and can be an indicator of bone cancer, especially in older dogs.

You do not have to panic about every little hitch in your dog’s step (particularly if they’re an older dog with arthritis), but sudden, relentless lameness ought to be assessed by a veterinarian.

Abrupt, relentless lameness should be examined by a vet.

Rapid, Unexplained Weight Loss or Gain

Weight loss is an especially common sign of canine cancer, and might show a gastrointestinal tumor that is otherwise undetected from the outside. If your dog starts dropping weight quickly, whether their cravings changes or stays the exact same, get to the vet ASAP.

Unexpected weight gain or bloating can likewise signify cancer. If your dog keeps their regular cravings however appears to gain weight quickly, it’s time for a check-up.

Unusual Discharge or Bleeding

Abnormal discharge or bleeding anywhere on the body is cause for issue, however this dog cancer symptom is most noticeable on the face. Funky eye discharge or an abrupt bloody nose can suggest specific types of eye and skin cancers.

Likewise, sores and bleeding in the mouth can be a sign of oral tumors, which frequently go unnoticed because people presume the discharge and smell is a normal sign of aging. While bad breath is common in older dogs, unusual smell, discharge or bleeding is cause for concern.


Old dogs slow down. It’s a regrettable but inescapable reality of doggy life. However, an unexpected, unusual absence of energy– sleepiness– can be a sign of disease or disease.

Sleepiness is various from plain old tiredness in that it changes your dog’s enthusiasm level. They might suddenly dislike a preferred toy or activity, or cannot get up and welcome you when you get back from work. Other signs of lethargy may consisted of extreme sleep and delayed reactions to visual and acoustic stimuli.

Lethargy is a basic symptom of a broad series of concerns, so it does not automatically indicate cancer. But if your dog is suddenly a lot less active than typical, something might be going on.

Uncommon Poop

You know your dog, and you see her “output” every day. You most likely have a sense of the difference in between normal poop, somebody-got-into-the-cat-food-again poop, and something more concerning. Relentless diarrhea, hardened stools, and straining can all be symptoms of illness.

If you’re worried about something in your dog’s output, do not think twice to call the vet. In particularly, watch for black, tarry stools, which can suggest ulcers, a symptom of mast cell tumors (source).

If you’re worried about something in your dog’s output, don’t think twice to call the vet.

Problem Breathing or Going to the Bathroom

Among the most common (and alarming) signs of disease or injury is when normal bodily functions end up being labored or painful. If your dog is having problem breathing, straining to go to the restroom, or otherwise seems to be unpleasant in the course of normal activities, don’t be reluctant to have her had a look at. Sudden, extreme pain or pain are important indication.

Cancer is frightening, however you don’t need to live in worry of it. Keep in mind: modern-day dogs live a lot longer than their ancestors. That dogs regularly live beyond age 10 is a fantastic indication of how far pet care and veterinary medicine have actually advanced. So track your dog’s health, and see the vet if you see something uncommon. The rest of the time, take pleasure in life to the max with your four-legged buddy.

Reyus Mammadli
Having engineering and medical education, in recent years actively engaged in the study of the development, reproduction of domestic animals. Special attention is paid to the treatment and prevention of diseases of Pets.
Pet Health
Leave a Reply