8 year old tabby cat that has not pooped in her liter box for about a week which is not like her?

Cat Question: I have a 8 year old tabby cat that has not pooped in her liter box for about a week which is not like her. She has always been overweight and now I notice that she has lost weight. She has peed in the litter box and is drinking her water but she used to be a voracious eater and now is not. I am feeding her Iams weight control cat food, which I have always fed her Iams but not the weight control. she has only been eating that for about 2 weeks. My question is the food keeping her from pooping or is there an underlying issue?

Hi Vladi,

Sorry to hear about your cat.

You need to see a vet soon.  If a cat has not pooped recently it could have an impacted colon, which would require an enema.

Also overweight cats that loose weight quickly could be prone to liver problems which is why you should see a vet soon.

I don't mean to scare you, but this sounds like it could be a serious case.