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Common Signs of Cancer in Dogs

There are numerous common things you can keep an eye for to stay ahead of cancer and other healthy issues.  Some of these signs may be a strong warning sign that your best friend needs help and you should visit your dog’s veterinarian as soon as possible.

Major Changes in Potty

If your dog is constantly asking you to take them out, and/or having a very hard time going to the bathroom outside then that is a sign that something may be wrong and your vet should see them immediately.  Another potty issue may be unusual diarrhea that persists for days.  Keep an eye on the pooh and make sure there is consistency.  As soon as you see any of these things, or discoloration, blood or other unusual substance, those may be an indicator that your pet is in need of medical attention.

Changes to Your Dogs Skin 

Anytime you notice discoloration, bumps or lumps on your pet’s skin then you should have it checked out.  Remember that your best friend won’t tell you if he is feeling a little off or ill so it is important that you remain proactive and get it looked at by a medical professional.  They are your best friend so do what you can to keep them around for a long time.


Have you ever seen a dog have a nosebleed?  No, and that’s because they are incredibly rare.  A sign of nose bleeding in a dog tends to be an indicator that something major is happening.  Older dogs are in a much higher risk of having cancerous tissue show up in the nose thus any blood is a strong to seek a veterinary evaluation immediately.  

Rapid Weight Change

One of the strongest indicators of dog cancer is quick weight loss.  This is often an indicator of GI tumor(s), even if the dog’s food consumption remains normal or is elevated, the tumors will cause their weight to drop quite fast.  If you notice that your dog is losing weight at either a slow or fast rate then take them to your vet and have the situation evaluated.  

Check Your Dogs Mouth

Make it a routine to check their mouth and make sure that the gums, teeth, and tongue look fairly healthy.  Keep an eye for lumps, bleeding, or sores forming in their mouth, and be sure to be aware if they are drooling more than normal as that too may be a glandular indicator or something else happening to your pet’s body.  Another oral health warning is their breath odor.   By now you probably know what your doggies’ breath smells like (and we know it is not the most pleasant odor out there), so if you notice a rather odd smell then that too may be an indicator of a potential health issue. 

Like with many dog cancers the earlier you can catch it, the higher your probability of mitigating it is.  We know that this isn’t an easy issue to discuss but it is common in animals and it’s up to us to be vigilant and to love them as much as they love us.