Today a friend stopped by. Tank was out wandering. The question was asked if Tank was fast. I took a photo of Tank off the wall and showed it to Tank. He was quick to rush the photo and try to bite it. I moved the photo around and Tank continued to chase it at full speed, which is fast. During one of his rushes I quickly gave the frame to my daughter and she moved it out of site. Tank stopped running and looked around the room. I reached over and patted his back telling him what a good job he did chasing the turtle way. During these territorial responses Tank never shows any aggression toward us.