Do you take your snakes out for a little fresh air? I frequently did this summer and am planning on doing a "last of the season" with my boa.
Now, I usually use the courtyard, but my boa is much bigger than my others and may go onto the cement. Should I take her somewhere grassier? There are plenty of spots around.
Also is 70F too cold. I think it's pushing it, but I think this girl deserves some natural stimulation