When repeat dog visitors come back, they run to my door instead of to the owners car. They truly enjoy their experience under my care. I've slept with dogs who have cried for their mommy or daddy all night till they were comfortable. I also really love playing around with them. The more the merrier I say. I have watched a large pack and can walk as many as 5 dogs at the same time. I can handle larger dogs which are usually difficult. I love playing with the ball, going to the dog run or just in the yard back and forth with balls and sticks until they are ready to pass out for the evening. There is so much more but the proof will be the experience in how happy the dog is when you return.