Niko enjoys playing fetch with tennis balls. We throw it from where we are sitting and more often than we'd like, the ball would roll under a cabinet. Niko always try to get the ball out on his own. The little guy is very persistent. At times, his entire head is under the cabinet. After a few minutes of trying, you see him staring at the ball obsessively until one of us gets the ball out for him. He sometimes resort to a quick bark to get our attention.