I have one ball python, and I've decided that in 1-5 years or so, I'd like to get a lizard, and I've heard tegus are really popular. But I haven't found a whole lot of information about them, so I'm here. What I'd like to know is:

Are there size or temperament differences between different breeds of tegus? Would it attack my snake if left near her(she's as shy as they come)? Being my first lizard, would I be better off with something different? Are there caresheets? Are they aggressive? What is an expectable size for the tegu and acceptable size for its enclosure? How long do they live and how often do they eat?

It's a lot off questions, but any input at all would be greatly appreciated. Thank you!