I have not had snakes long but always believed food was swallowed head first. Makes sense everything would just fold up and go down smoothly. Well, my two BP’s have both swallowed prey tail first. My Male has done it once each with live and F/T and my female just did it today with F/T. I do not use a hairdryer to get her to take it. She strikes it and coils around it. After a minute she checks it out head to tail and normally takes it from the head. It’s just really odd.