it just did it that one time, as far as I have noticed. It a GREAT eater and is very alert when handled. Actually- the snake seems to get very uncomfortable when given the opportunity to crawl around outside its cage when being handled...it refuses to leave your hand/arm. Its only about 10 weeks old and never come into contact with another snake so pregnancy is definitly out of the question, however it was about to go into shed when I noticed this so maybe it was feeling a little strange in its old skin.