Some cats just like to eat stringy things. It can be really dangerous, very expensive and sometimes fatal.
You need to be check thoroughly (crawl around the house at kitty level) for anything else the little boy can eat. Look for ribbons, string, yarn, rubber bands, plastic, etc. Find and remove or lock up all of it. Don’t forget to remove things like the tails off his two mice.
Ask the vet what he/she recommends for hair ball relief. Even though Warren isn’t swallowing his own fur, he does need to have something that will keep the hair moving along through his system instead of getting caught in his intestines.
Be very wary of pulling anything out of his bum. Let it pass naturally. If he is prancing around with a pony tail hanging off his rear end, you can trim it off close to his bum. Sometimes ingested stringy things get stuck in the intestines and if you pull on the end you can see, you end up slicing open his intestines. That’s why you don’t pull on strings coming out of their bums.
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