Getting old, stressed out, disease.
toxo plasmosis
If you want to place your cat on a diet to lose weight, you should first talk with your veterinarian. If your cat loses too much weight to quickly, it can cause some pretty serious medical conditions.
I can think of two causes, one not-so-pleasant and one bad. The not-so-pleasant cause would be dental disease such as gingivitis or an abscessed tooth. Both of these would cause vomiting, and since it would hurt to eat, the cat would also lose weight. The bad cause would be cancer, which in a 12 year old cat is not uncommon. There are other potential causes, but these two would be where I would start. Regardless of the cause, you need to take your cat to a veterinarian for examination and treatment immediately - this isn't a fun life for your cat to be living and you need to get her feeling better.
It can not unless the bridge already has a lot of weight on it and the cat would put the bridge over the maximum amount of weight that the bridge can withstand.
usually worms make a cat eat like crazy but still lose weight.
You would typically use pounds (lbs) to measure the weight of a cat.
To help your 19 lb cat lose weight in a healthy way, you can start by feeding them a balanced diet with controlled portions, providing regular exercise opportunities, and consulting with a veterinarian for a tailored weight loss plan.
First, weigh yourself. Then, write that down. Then hold the cat in your hands and weigh yourself again. Subtract the cat and your weight together from your weight.
Take your cat to a vet. It could be worms, or something more serious.
the cat would be at the weight of 9 lbs but i think it should be more.
Take your cat to a vet , they will set up a feeding plan , exc . Make sure your not over feeding your cat . There's usually serving sizes according to weight on the back of food bags/cans.