answered 3/8/2009 My Cat Can't Seem To Poop. There Is A Large Bowel That Seems To Be Close To Her Rectum, And It Is Too Big For Her To Get Out. How Can I Help Her? Take her to the vet ASAP. My mother in law's cat had to be put down for that very reason, hopefully the vet can help your cat to pass it but take her in asap.