Since your cats stools were fine prior to this and he does not go outdoors - my suspicion is that he got some tainted food. That has served to upset his system to a point of it going into food poisoning mode. That is when the system is so shocked that it tries to rid itself of the offending substance. At this point you need to rest his system. So I would like you to boil skinless chicken in unseasoned water. Add a pinch of salt and sugar and some plain white rice. I would like you to feed him only this for the next three days or until his stool normalizes. You can also give him one teaspoon of yougurt daily to replace the "good" bacteria in his system.
You must resolve this - and quickly.Because extended diarrhea can deplete your cats system and lead to dehydration and even death.
If you have anything left of that bag of friskies - throw it out. when you do start him back on cat food - do it very slowly because his digestive system is so irritated - it can become reupset very easily.
Please let me know how he is doing and if you need any more help - just ask.

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Dedicated to Cats and the people who love them!
Please press ACCEPT if my answer was helpful and leave feedback Thank you! Terri

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