So i bought Atlas (named him after the greek titan coursed to hold up the heavens) my greek tortoise from pet smart about 2 weeks ago poor little guy was infested with worms in the middle of deworming process currently but i have noticed since i have had him that he will some times jerk his head to the side rapidly when i was scratching his neck to be able to syringe feed him or when we were at vet while holding him while the assistant was doing something he started doing it asked the assistant about it she said she didnt know she went to go ask the doctor and she said the doctor said it might mean hes mad does any one have any idea why he does this or what it might mean ???