7 Subtle Signs of Cancer in Pets That Many Pet Parents Miss
When it comes to cancer in our dogs and cats, catching it early can make all the difference. Early detection gives you and your vet the best shot at treatment, potentially leading to a cure or remission.
But spotting those early signs can be tricky, especially since some are so subtle that they might just seem like normal aging changes. That’s why it’s important to keep an eye out for anything that feels "off" and chat with your vet if something catches your attention.
Here are 7 signs that could point to cancer in your pet:
1. Weight Loss
If your pet is losing weight without being on a diet, it could be a sign of something more serious. Some cancers cause fast weight loss, but most do it gradually, so you might not notice right away. It’s not uncommon for weight loss to only become obvious when your vet compares current weight to old records.
If they’re losing weight but still eating normally, consider possible causes like diabetes, digestive issues, hyperthyroidism (in cats), or cancer.
2. Lumps and Bumps
Lumps can be hard to spot, especially on long-haired pets. A lot of pet parents put off vet visits if the lump seems small, but even tiny lumps could be cancerous. Breast cancer (tumors in the mammary chain) is often missed, especially in unspayed females.
Dogs and cats can also develop cancers in organs like the liver, kidneys, bladder, or even their mouth, so don't forget to check the gums and under the tongue—those areas can hide tumors too.
3. Changes in Coat
If your pet's coat isn't as glossy or healthy as usual, it could be more than just a bad hair day. Watch for:
Hair loss
Brittle or dry hair
Dandruff or scaling
Skin infections that don't go away
Excessive shedding
Cancer can mess with your pet's coat, whether it’s directly affecting the skin or coming from other parts of the body, like the thyroid or adrenal glands. If your pet’s licking too much or not grooming at all, that’s another subtle sign to watch for.
4. Changes in Appetite
A sudden increase or decrease in your pet's appetite can also be a red flag. Some cancers can cause a loss of appetite because of pain or general discomfort, while others might make your pet hungrier than usual, especially if the cancer is burning through a lot of calories.
Even with a normal or increased appetite, certain cancers can lead to weight loss. So, if your pet’s eating more but still seems to be shrinking, it’s time to talk to the vet.
5. Bathroom Habits Changing
Pay attention to any changes in your pet’s bathroom routine. Some cancers affect the gastrointestinal system, causing diarrhea or constipation. Others might make them drink more water, leading to more frequent potty breaks. Urinary cancer can cause accidents inside the house or make it hard for your pet to pee.
If you notice these issues, it’s definitely worth bringing it up with your vet.
6. Behavioral Changes
Behavior changes can be subtle but important. If your pet suddenly loses interest in things they used to love or seems more sluggish, it could be a sign of cancer-related pain or even brain cancer. Other signs to look out for include:
More accidents indoors
Changes in sleep patterns
Pacing or restlessness
Increased clinginess or aggression
Seizures or tremors (although these might be harder to notice unless you're there)
7. Coughing
Persistent coughing in pets, especially if it doesn’t go away, could indicate a tumor in the lungs or a mass pressing on an airway. It can also be a sign of fluid buildup around the lungs. No matter the cause, if your pet starts coughing a lot, it’s always a good idea to have it checked out.
How to Help Detect Cancer Early
Your vet knows how to spot the signs of cancer, but you see your pet every day. That means you're in the perfect position to notice something unusual before it gets worse.
Here are a few tips for checking your pet at home:
Run your hands over their body to feel for lumps or bumps.
Look for changes around the nipples, especially in female pets.
Weigh your pet regularly (monthly if possible) and keep track of any weight changes.
Check their mouth, teeth, and gums for signs of trouble.
When grooming, keep an eye out for any changes in the coat or skin.
By staying on top of these small checks, you can catch any subtle signs of cancer early, which could make a big difference in your pet’s treatment options. And if you're ever unsure, don’t hesitate to reach out to your vet!