How cool!!!!! I think Tess realizes she could be Who's lunch and wants to stay on his good side 
We picked it up at East Bay Vivarium when we lived in CA (Bay area). When you buy one, make sure its a baby and captive bred. They eat anything!Oh Wow!!!! Before Cleo died and we got Jordan my hubby and I were getting ready to put down a deposit on a B&W tegu. Where did you get yours from? Of course we haven't discussed it since getting the pup but the plans are still in the future. Beautiful lizard.