Does my cat's obesity contribute to her pooping on the floor?

My one year old cat is occasionally having accidents around the house. (I can only conclude they're accidents, as it's only a little bit of poop at a time, not what she usually leaves in the litter box.) She's also obese. (Yes, we're beginning serious attempts to handle this. We also have her brother, a very thin cat, and we don't want to starve him in the process.)

Does her weight contribute to this or are there other factors I should worry about? They eat a high quality, grain free diet with both wet and dry food.

Laura2016-02-29T08:35:33Z

It could.
She should go to the vet to be sure that there are no other health issues other than her weight.
You should also talk with the vet about a proper diet for her. Dieting in cats can be very difficult, loosing too much weight can be just as bad as not loosing any weight at all.
The cats should also be on a feeding schedule, and be fed in different rooms. This way the skinny cat will get the food that he needs, and your overweight cat will not be able to take any of it.

?2016-02-29T10:21:03Z

Cut her off the wet food.