Is dog food bad for horses?

Answer 1

Not as bad as cat food. But horses are herbivores. They eat grass, alfalfa, and oats. Dog food has a high cereal content, so a horse could probably eat a little bit of it without ill effect. But a steady diet of dog food, designed for carnivores, would likely contribute to health problems over a long period of time.

Cat food would be even worse for horses. But chickens--the egg laying mix for chickens typically lacks sufficient protein, and so occasionally a handful of cat food is good for them.