Why is my cat skinny...

[Upirium]

I have 3 cats here. They all get the same amount of food. They're all spayed. Two of them are kind of fat, and have a few health problems. The other is thin and small, but is by far the healthiest of all my cats and has only really been sick once in her life.
Any ideas...?  

[Gabrielle_AnimalLuver]

Free fed? Sometimes the big cats eat most of the food, sometimes cats just aren't that food driven, some cats have faster metabolisms. Whatever the case. I think measured seperate meals for all of them would be a good idea. Next check up ask your vet what a good weight for each cat would be. The "skinny" cat may actually be a healthy weight but just to be sure, and also to know how much the fat cats should lose. A lil excess fat on a cat increases risk of diabetes, kidney/liver disease, increased risk if they ever need surgery and honestly are just difficult to treat. Trying to find the muscle for an injection or a vein for an IV catheter on fat animals just makes it that much more difficult to get important things done quickly in emergencies.  

[Upirium]

Gabrielle_AnimalLuver

Free fed? Sometimes the big cats eat most of the food, sometimes cats just aren't that food driven, some cats have faster metabolisms. Whatever the case. I think measured seperate meals for all of them would be a good idea. Next check up ask your vet what a good weight for each cat would be. The "skinny" cat may actually be a healthy weight but just to be sure, and also to know how much the fat cats should lose. A lil excess fat on a cat increases risk of diabetes, kidney/liver disease, increased risk if they ever need surgery and honestly are just difficult to treat. Trying to find the muscle for an injection or a vein for an IV catheter on fat animals just makes it that much more difficult to get important things done quickly in emergencies.

The strange part is it seems like my skinny cat eats more than any other cat. We let her outside, and she has learned her lesson not to leave, and she goes from eating outside to coming inside and going straight to the food bowl.  

[Gabrielle_AnimalLuver]

iDiru

Gabrielle_AnimalLuver

Free fed? Sometimes the big cats eat most of the food, sometimes cats just aren't that food driven, some cats have faster metabolisms. Whatever the case. I think measured seperate meals for all of them would be a good idea. Next check up ask your vet what a good weight for each cat would be. The "skinny" cat may actually be a healthy weight but just to be sure, and also to know how much the fat cats should lose. A lil excess fat on a cat increases risk of diabetes, kidney/liver disease, increased risk if they ever need surgery and honestly are just difficult to treat. Trying to find the muscle for an injection or a vein for an IV catheter on fat animals just makes it that much more difficult to get important things done quickly in emergencies.

The strange part is it seems like my skinny cat eats more than any other cat. We let her outside, and she has learned her lesson not to leave, and she goes from eating outside to coming inside and going straight to the food bowl.

Is she the only one who goes out? It sounds like either she has a good metabolism, maybe naturally or maybe from being active. It's also a possibility that she has worms. Which reminds me I need to test Rascal soon because I KNOW he eats entire mice.