[crazy4cats]

Hi-
It is believed that hyperthyroidism in cats may be linked to eating fish flavored foods. Hyper-T is becoming extremely common in cats. I have not heard anything about fish flavored foods causing dogs any harm. I have four cats and my oldest has been being treated for the condition now for a couple of years.

I feed my dogs fish flavored kibble once every four or five months with no issues so far.