[Drdogface]

Actually there are (or were) some maggots that will move right on into live tissue and keep on going. Those flies (called the primary screw worm blow fly) were eradicated from the US back in the 1930's as I recall. What they did was capture enough of the male flies (really) and irradiate them to sterilize them and turn the loose. Gradually the population just died off. It was causing a huge loss in the live stock industry. Like so many other things that were once eradicated they could find their way back. Matter of fact, in my earlier years of practice I could swear that a maggot infested would in a dog had gone far into healthy tissue and the dog had to be put down. Obviously the use of these things in a medical sense needs to be closely monitored. To this day I still get totally grossed out by these things.