There are many theories as to why pets develop food allergies, and there’s probably some truth to all of them.
We know allergies are the result of an immune system overreaction which only develops after repeated exposure to potential allergens.
Many people believe the whole thing started with the “never switch your pet’s food” directive CEOs of major pet food companies began promoting 50 or so years ago as a way to gain brand loyalty.
Certainly feeding your pet the same food every day, year after year, for many years will increase the chances of your animal reacting to a component in the food.
