As you can see from the latest video Bruno and maxi at 19 months have a phenomenal amount of energy to expend. Their speed and grace continues to amuse us as they charge around the yard. Never having known Boxers before as well as we know these guys I am astounded by their energy, enthusiasm and zest for life. Of course, I was well aware that they are high energy dogs I am a high energy person so was not too disconcerted about that. However, from this experience I now see why many Boxers out there are a little on the chubby side. Even a 5K run will not tire them for long they really need extensive hard play as they are in the videos. When I see the speed they run in the yard I am awed by the way they hold themselves back to run at my pace which is about 8mins per mile. If they could talk I bet they would wish I was on wheels:)