Hi, I have an 8 year old garter snake and last week I noticed something new while watching him. The video will show you what I mean. Some basic information is I just brought him out of brumating last week and fed him two pinkies for the first time today, with no problems. However, when I watch him in the cage he'll do this shaking thing then stop, then start again. Sometimes he goes a long time with out doing it, ect. Hope the vid helps

https://m.youtube.com/watch?v=w4nxC5TpWXQ