Why is my senior cat acting strange, losing weight, and has eye issues?

Your cat needs to see the veterinarian today. The weight loss and lethargy are concerning for many conditions including kidney disease, hyperthyroidism, diabetes or cancer. Other causes are also possible. Many of these conditions can be managed if caught early. The veterinarian will need to check from blood and urine test results. I hope this helps.

Sudden weight loss is always a very big warning light that should not be taken lightly, it's usually a sign of an internal disease that needs to be investigated, i strongly recommend taking him to the vet in order to get it checked, he will need to have a blood test done and possibly an xray as well in order to attempt to diagnose the reason for these symptoms.

Based on what you are describing I would be concerned that something is going on with Cupcake. At her age I would be concerned about 3 diseases in particular: diabetes, hyperthyroidism, and kidney disease. All of these diseases can cause lethargy, anorexia, and weight loss. I would recommend taking Cupcake to the vet to be checked out. Your vet can run some simple lab work to determine if she has any of these diseases. These illnesses can also depress the immune system and lead to additional illnesses like upper respiratory tract infections that would explain the sneezing and watery eyes. Hopefully your vet can determine what is going on so you can start treatment and get Cupcake back to herself. Best of luck.

Poor Nelson! From your description, I would say that something is definitely wrong. 13 or 14 years is really not overly old for a cat, certainly not old enough to cause these symptoms due to "old age." Some common causes of weight loss, decreased appetite, and acting lethargic along with peeing in odd places and difficulty walking would include diabetes, hyperthyroidism, or chronic kidney disease. I would recommend having Nelson examined by a vet as soon as you are able to - he/she can do basic blood work and a urinalysis to check for these problems and help determine what is causing his symptoms. In many cases, these illnesses are quite treatable once a diagnosis is made, so there's a good chance that your vet will be able to help.

Poor Garfield. At age 17 that is an awful lot going on and I'd be worried there is an underlying issue such as kidney or organ failure, disease, etc. Since he's so old and is having so many symptoms, it's best to bring him to your vet ASAP. They will likely want to run a few tests such as bloodwork or an X-ray to check his organ function, etc. If you can, bringing in urine or stool samples can also help with any testing and help streamline the process. Until you can get the vet, keeping him as comfortable as possible and keeping his eyes and nose clear with a clean washcloth can help. Some cats also do better eating if they can smell the food, so warming up his food or adding some boiled chicken that is smelly may encourage him to eat a little until you can be seen.

Disorientation, vision and weight loss can all be signs of severe kidney disease and blood pressure or diabetes and i recommend an urgent check up and blood panel to investigate underlying causes. It is hard to know if her vision was affected to cause her to hit her head, or the other way around?

In an older cat, my first thought would be dental disease. This would be painful for Krinkle, cause him to eat less, and subsequent weight loss. It could also be that he has diabetes, kidney failure, or hyperthyroidism. Having him seen by a vet this week is a good idea. I hope this helps!