My cat loves a certain brand of dry cat biscuits. When they're put out, she'll eat them ravenously. Give her anything else, and she'll look bored and eat nothing at all, even going hungry a full day - or until we put out her favourite food.
And I'm worried, because eating the same thing all the time can't be good for any animal, even if the dried food she likes has (or at least the manufacturer claims it has) all the vitamins and minerals a cat needs. Human beings can't possibly know everything a cat needs when they're not even sure what they themselves need.
I've almost convinced myself that the manufacturer has put something in this food to make it irresistable to cats in the way catnip and human earwax (eow) are, and that my cat doesn't just like them, she's addicted to them (to sell more biscuits, obviously).
I'm worried about the long term health of my cat. Cats are usually very fussy about what they eat, but is it usual for them only to accept one brand of food and not ever eat anything else?