Originally dogs and cars are carnivores. Mine have dry fiood available 24/7; raw or cooked meat or fish every day ( as soon as kittens weaned they munching on raw beef, pork, fish or boiled/roasted. We never had any problems with tummies; kittens normally quite chunky and lively.

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"Do not meddle in the affairs of cats, for they are subtle and will pee on your computer." --Bruce Graham
There are no rules, rules are only for people who fit inside a box, if you want to think out of the box there is no hope... Life has no Box. (Tony Howells)