Because, many health disorders are genetic. We all know people that eat at McDonalds every day, smoke and drink alcohol, and yet they live till age 90.
Others run every day, are on a healthy diet, stay fit, abstain from bad habits and drop dead before age 50.
No guarantees. Of course it makes sense to go with a quality food within one’s budget…but that doesn’t prevent bad stuff from happening.
PS: Regarding “Tasty dog food for a very fussy dog” just put a spoonful of homemade chicken broth (boiled chicken with nothing added) on the kibble, defatted, debone the chicken and serve later but discard most of it because of the tiny bones. You can freeze servings in individual baggies.
