Why is my cat's temperament changing? Should I take her to the vet?

I would recommend that you have Xavier examined by a vet. Limping can be caused by a sprain, a fracture, joint issues, etc. Cats are good at hiding pain, so if you see a limp you can know it is is painful. Also, sleeping more and not purring are often signs of pain. The vet will do an exam and maybe x-rays to determine the most appropriate treatment.

Due to the large number of symptoms your cat is experiencing (lethargy, limp and vomiting) it is best to schedule an appointment with your local veterinarian for care. It is possible that the limp may be caused by an injury that is causing pain and or nausea in your cat, leading to the lethargy and vomiting. Pets in a lot of pain may refuse to eat, and thus not get enough energy, or may become nauseated or vomit up their food. Addressing the underlying problem (in this case, possibly the limp) can help improve overall symptoms. Feeding a bland diet of warmed up boiled chicken or turkey may also encourage your cat to eat some, getting his energy levels up and helping him to keep food down. Until you can be seen by the vet, be sure to keep your cat quiet and calm and restrict activity. This will help prevent further injury to the affected limb and may help to relieve some pain or nausea related. Once your vet has taken a look at the limp and other symptoms, they can then provide you with more specialized treatment depending on their causes.

Lethargy can be a sign of many different diseases. I am not sure of his age but he should be examined by a vet to determine the cause. He could have an infection, musculoskeletal issue, kidney disease, liver disease, diabetes, thyroid issue, etc. Your vet can run some lab-work and take x-rays, if needed, to help diagnose and then determine the best way to treat. He may need an antibiotic, anti-inflammatory, or other medications, depending on the cause. Hope he feels better soon!

A sudden change in behavior from the normal can be a sign of illness in a cat. Given that Ava is acting very differently from the way she was before, I'd take her into a vet today for a health check. Best of luck.

Your kitten needs to be seen by a veterinarian. This sounds like a chronic infection which needs to be addressed. Matted fur is a sign of the cat not grooming itself and not playing is also a sign of not being well. This is not going to go away by itself. Please take your kitten to a vet tomorrow morning.

I would have Nurmal (love her name!) checked out by a vet. Sudden changes in behavior in a senior cat can point to medical problems such as hyperthyroidism and arthritis (pain may make her cranky). I recommend getting a physical exam, geriatric blood panel, and urinalysis. These tests will help the vet identify if she is suffering from a medical illness. Should one be found, the vet can discuss treatment options with you. I would take her into the vet on Monday if possible. Good luck, I hope this helps!

Antique needs to be examined by the veterinarian today. Weakness is never normal and can indicate many things including toxin ingestion, drug exposure, an infection in the brain, brain cancer, low blood sugar and other sinister reasons. A physical exam and bloodwork is needed to begin figuring out the cause and the best treatment. Other diagnostics may also be indicated. The loud meowing also indicates she is either in pain or in distress. Since she cannot tell you what happened or how she feels, she needs help to figure out what is wrong and to get better. I hope it's nothing too serious and that he gets back to normal quickly.