Yes feeding raw does make a difference. Like NQK said, it is an optimum diet.

As far as the dogs being more excited about their food on raw, I have seen this a lot with younger dogs. They really get wound up about getting fresh raw meats. I fed chicken and venison mostly and there was more excitement over venison since it is a wild meat.

They usually get used to it and settle down over time when they figure out that they get the raw every day. One thing that helped for my own dogs was to sometimes feed a half a chicken carcass so they had to eat it slower and chew on it. You can often buy cheap whole chickens on sale and just cut one in half for each dog. Not for every day of course but every once in awhile.

My littermate to your Crash pup certainly is very enthusiastic about the raw meat and eats it very fast, much faster than she eats kibble. I don't like to feed a young pup on just raw so I also give her some kibble to be sure she is getting proper nutrition.

But as far as raw meats making dogs meaner, no it does not. They get more excited and some get more possessive about this food since it is higher value in their minds.

It's just a higher quality food all the way around and the dogs do get very excited and happy to eat it.