I live in Arizona and would like to get a smaller tortoise that could live outside most of the year, friendly, and is active most of the year (doesn't or minimally hibernates/estivates/brumates). Any suggestions? I have been considering Russian, Hermann's, Greek or Chaco/Argentine.
If your weather gets down below 40 degrees in the winter time, there isn't a tortoise alive that would stay active. They need the sun to keep them active. However, if you provide heat for them, rather than letting nature take its course, you can keep any tortoise active during the winter. I think you would have a hard time finding any Chaco tortoises. They are very scarce in captivity and I never see them for sale. Russians are very personable and a great first tortoise. However, they do hibernate, so you would have to provide them with an artificial sun to fool them into thinking it really isn't winter, afterall!
Yvonne