I love Tegus! I suggest bouncing over to Tegutalk forums.
They need a higher basking temp. 95-110. Room temp ambient is fine. And I suggest you put that baby in a 30+ gallon tank at the very least. Some Tegus are free roam, but they also have access to outdoors where they can do their tegu business. Digging under blankets doesn't seem like it would cut it. They need substrate to dig.
And as that Tegu looks fairly young, it will need to be fed mainly insects, cooked eggs, and some meat(ground meat/
feeders). An adult diet is a little different where you can offer fruits and veggies as well.
And I suggest you use a water dish where the Tegu can fit it's whole body in.
Black and white Tegus are typically very nice. I haven't met one that wasn't dog tame. Nor have I met one that was aggressive, although I have heard of cage aggression. They're great animals to handle, especially socialized adults. I hope this guy isn't trading that Tegu because it has some behavior problem or something. Try handling the Tegu regularly. They are generally very sweet animals.
And that female BP looks a little thin, but otherwise very pretty.
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