Boo loves people, especially kids. There is a campground across the river and on weekends there are often kids playing in the river. Boo will run to them his tail wagging ninety to nothing.
He teaches them to throw rocks for him to fetch. He does that by picking up a rock and dropping it at their feet over and over until they get the idea. I've seen him do it a hundred times now. He is a great teacher.
When he was a little pup he looked like Boo-Boo from the Yogi Bear cartoons, hence the name, which has since been shortened.
I'd guess he weighs about 80 pounds of solid muscle. He is mostly Black Lab but there is some other mix in there too. The white splotches and the shape of his head suggest maybe Boxer but there's no real telling.
Boo knows everyone that lives up and down the river, and is friends with all of them. He knows the fishermen that roam this stretch of water quite well also. It is a rare day when I go fishing that he isn't with me.
The DNA for retrieving is strong, very strong, in this dog. He tries to retrieve fish that I release. He doesn't attempt to touch them when I am catching or handling them, only after they are back in the water.
So far the fish have been safe.