Hi grace it does sound as if there is a problem with ur cat. when kitty's sick most of them will sleep away. unfortunately u didnt say much so we cant pinpoint what might be the case. my advise is to look for other signs. is he using the litter box right? any changes in pee/poo color ,texture, blood present? is he eating properly? vomitting? anyway take note of any other changes and take him to the vets. no use waiting until something goes terribly wrong

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prevent a litter fix your critter
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