A coworker has 2 8 yr old spayed female cats. One cat had bloody urine out of the litterbox. She feeds her cats a canned fish cat food plus dry food. Itold her that my vet is against canned cat foods because of allergies to fish and potential urinart problems. In the past I had a male cat who developed urinary blockage problems which seemed related to diet. At that time dry and canned foods o a better quality or made to prevent uti's were rare. There was also a theory of some foods of a higher ash content and then magnesium as causing renal calculi. Anyway, the coworker took her cat to the vet who claimed dry foods caused more calculi and that fish canned foods are fine and finally that she has never seen a blockage in a female cat.
So I feel stupid if I gave outdated information. What is the current beliefs on causes of renal problems in cats.


