I just got a baby (3 month old) red foot tort. Once I got him home I noticed that his head bobs when he breathes. He seems to be very healthy other wise, and I just wanted to make sure that this is a normal behavior, because if it isn't I will make a vet appointment. He is eating, defecating, and moving around as well as thermoregulating. Any advise would be great as this is my first tort. Thank you!