Eating or Drinking More Than Normal

If your cat’s appetite or thirst suddenly increases, and it’s not easily explained away by pregnancy or an increase in activity, it could be a sign of a number of conditions, including an overactive thyroid gland (hyperthyroidism), kidney failure, diabetes, and many others.

Eating or Drinking Less Than Normal

If your cat’s appetite or thirst suddenly decreases, it could be a sign of a range of problems, too. Among the possible causes for these signs are pain (like from arthritis or dental/tooth pain), digestive upset or obstruction, advanced kidney disease, an infection, and a host of other possible medical issues. If your cat isn’t eating, don’t wait to contact your veterinarian. If this isn’t addressed quickly, it can lead to a type of liver disease that is often fatal.

Vomiting

If your cat is throwing up, it can be a sign of a digestive blockage, irritation, infection, or even heartworm disease. It can also be a sign of pancreatitis or a metabolic disorder, such as kidney failure. It’s important to take your cat to the vet if they’ve been vomiting longer than a day, if there’s any blood or foreign material in their vomit, if their vomiting is associated with a decrease in their urination, or they’ve vomited more than 3 times in a 24-hour period. And even if they’re “just” bringing up hairballs, anything more frequent than once per week warrants a medical workup to look for an underlying cause.

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Diarrhea

Cats will have soft poops occasionally, but when it lasts for more than a day, has blood in it, or is accompanied by other concerning signs, it’s best to take them to the vet as soon as possible.

Change in Weight

Whether it be weight gain or loss, changes in your cat’s weight can be possible indicators of underlying problems. Sure, weight gain could just be that you’re overfeeding them, but it could also be diabetes, fluid buildup (e.g., from heart disease or liver problems), or another medical condition. Similarly, weight loss could indicate kidney disease, cancer, an overactive thyroid gland, intestinal worms or other parasites, and a host of other issues. Either way, a veterinary check-up sooner rather than later is always a good idea.

Decreased Energy

If your crazy cat suddenly (or even gradually) becomes lethargic, that’s a concerning change. It could indicate pain (like from arthritis or even an infected cat bite abscess), anemia (condition of decreased red blood cells), heart disease (including heartworm disease), or another issue.

Peeing or Pooping Outside of Their Litter Boxes

Not only is this inconvenient and upsetting for you, but these signs can also indicate a range of problems for your cat. It could be that something in their environment is stressing them out or it could indicate a medical problem that warrants investigation. It’s important to note that cats don’t do this out of revenge — cats with osteoarthritis, for example, may not be able to climb over the sides of the litterbox. Either way, bring them to your veterinarian sooner rather than later so you can quickly get to the bottom of it, for everyone’s benefit.

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Itching or Chewing on Fur

Cats are fastidious by nature and may scratch at themselves occasionally, but an overall increase in itching behavior could indicate parasites (e.g., fleas, mites), a skin infection with bacteria and/or yeast, ringworm (which is actually a fungus, not a worm), or even allergies.

Coughing

Coughing in cats isn’t always obvious and many people mistake it for a cat trying (unsuccessfully) to bring up a hairball. But coughing is often a sign of asthma, heartworm disease, pneumonia, and many other problems of the heart and lungs in cats.

Don’t wait until your cat is sick to visit the veterinarian. Establishing a relationship with your vet allows them to notice changes over time that you may overlook or not know to look for. If your cat’s stress keeps you from taking them to the hospital, learn what you can do to ensure your cat has a stress-free vet visit.