This happened to my vet. She had an older female cat when she brought in a kitten. The older cat picked up its bags and moved down the street. And then when that owner tried changing the food the cat moved again.

My vet said it has to with the alpha roles cats have. But that doesnt seem to be the case here,sorry.

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Cats-Decker, Horris, Soda
Dog-Sophie
10 Gallon tank - 1 fantail goldfish.
Rest in Peace Kira (cat)2011