I've had my red tail boa for around 6 months now & have had no problems until now. I noticed a couple days ago he has an indentation about half way down his spine. I handle gir regularly & have never seen it until the other day. I'm a member of arachnoboards so I posted it there trying to find some answers but all I got were 2 people arguing back & forth. So I was talking to boanerges & he suggested I join here. Could him regurgitating his meal the day before have anything to do with it? I usually feed him live but switched to frozen thawed because I didn't want him all knicked up. I also discovered he had mites lastnight & treated him for it. I think they might of came from a recently acquired snake though because he had them really bad & their enclosures are right next to one another. Any advice would be greatly appreciated & please let me know if I'm doing anything wrong. I've had a lot of experience with tarantulas but am a little new to reptiles. I tried to upload pics but I'm using my phone so it isn't letting me. I do have a photo bucket account that has pictures of it. My user name is M_MULLINS69.