I got my Red Tail Boa about 6 months ago and it has been great, always ate well and was very docile. He would always curl up and hang out in his hide but since last week he has been in a straight line looking out the window of the cage and whenever you open up the lid he gets into strike position and almost got me. I was wondering what could cause something like this he has been good for so long and now this, any input you guys have would be great. I will try to take a picture of what he is doing if I cane get a hold of a camera.