I've never heard of it..... But i'll assure you and everyone else, My Boys will never be put under Anesthesia for an Elective surgery. I'll make the decisions, as medically necessary, if given no other option. No consideration other than a must do, Then i'll have to take the choice. Bully's and Anestesia aren't a good combination from what i've read. I'm sure you will get more in depth responses and feedback from others, this is just my opinion.