I can't remember where, but I do recall reading about a burmese python lying against the length and width of a large Vision cage and pressing against the tempered glass(hard) and shattering it!
Looking at a Vision at a recent show and pushing against the glass with my own hands I thought that this sensational story was unlikely and fabricated.( after all, tempered glass is used with venomous species in big zoos which have to meet tough and sometimes excessive federal standards). Anyways today I was watching my 30 inch boa(I picked him/her up at the past January show in White Plains, it was about 18 inches long so I assume it was quite young). The boa is now, I would assume 'bout 1.5 pounds. It just ate a sizeable mouse and after basking for some time, it decided to make its own cool spot by folding itself in half and pushing off the glass thereby forcing the half full waterbowl(Its a huge rubbermaid halfgallon (the thing you stuff a million homemade cookies into, and requires two hands to pick up, with one hand your wrist will give out) several iches over and snuggling up in the new gap formed. Now were talking about a boa that is small enough to cruch up into a ball and stuff into your front pocket! Now the reason I have such a large waterbowl is because I live in New York and the heat really dries out the room and I've got a screen top. So pound for pound the burm possibly 100 pounds is quite capable. I never owned a "huge constrictor" but I certainly have a new respect for them and that sensational story might be true. Plus the story of the gaboon that struck through the glass of a neo!