I came across a post (not on this site) that someone's tortoise has this same bubble like area between the neck and leg and it was from pneumonia. Her one bubble turned into three and the vet had to prescribe 2 different antibiotics for it. The pics are of my girl and I only see the one bubble on one side when she sticks her neck out. It's not hard either. Has anyone had experience with this? I'm a little worried now although my girl is acting completely normal and no signs of a RI. I try not to read into info other than this site because of so much misinformation and it just gives me anxiety. Thank you!!!