So, In my many, many, many hours of gathering informations about these fabulous lil' babies....I've read of many different (and often conflicting) options for mix in's the the dogs food. I've seen eggs, and extra virgin olive oil as an add in for a healthier, shinier coat (Is this true? Not unhealthy?) My mother in law mixes in pumpkin for her lab's dinner. (again....healthy?) I appreciate any in sight on this.