Sheldon loves him some tennis balls

Sheldon is so smart!  He knows how to sit, drop it and is learning lay down.  He is getting so good at bringing the ball back and dropping it when Cassie plays with him - very treat motivated and tennis ball motivated (i think equally), as you can see by these pictures...

He has defuzzed many tennis balls but still loves them and just chomps on them all the time (which is great, cause he has 3 or 4 of them to choose from).  He also chases them and will play with them with you (doing skids across the tile - so funny) and he also plays with them by himself and throws them in the air and then chases them... Quite hysterical to watch. 

photos by Cassie :)