when i got harvey, a friend who has had dogs fo 25 years advised me to only feed him raw food, it was a special diet, everything had to be raw, on advice my vet said it was unsuitable for domestic dogs and the amount of protein in the food was too high, and raw meat could easily have bacteria in it. he said the info re the diet making the dogs more aggressive (ie the friend ) was rubbish...........................ps one of his dogs was "put down" for attacking a dog and its owner.