The problem with a dog, or may we say, the reason which a dog may not eat so much Broccoli as a human, may be in the fact that the dog has to have a more Acidic body to be able to eat the half Decayed foods it chooses to eat or it would Die!
And Broccoli may be highly Alkalizing for the body!
Now it just so happens that most dogs have more sense than their masters and if given a choice, they will Balance their own Diet and stay much more Healthy if give a choice of what to eat!
But as Humans may be, they think they are smarter than their pets, so they force feed them until they Die!
It all boils down to the Acid Alkaline pH Balancing Principles and how they may apply to the species of Life which you may want to consider!