Originally posted by wolfsoul
That's interesting -- I've heard that some dogs are particularly competitive and may bite another dog and that that is the main reason for the muzzles. Although I have only seen one lure chasing event in "real life" and no fights broke out, and the dogs never even wore muzzles.
Well, I'm here to help dispell rumors

If a hound is particularly disruptive during a race s/he will get what's called an 'interference line'. If s/he get's 3 of these lines, it is not permitted to race.. ANYWHERE and is put into adoption.

It's not always a sign of aggression either. Some hounds are just downright playful and goofy.. and have no real interest in racing. so when they are out running and there are others out there with them, they might see that as an opportunity to 'play'.

Go to a dogpark (as I'm sure you have)... and see how dogs of all different breeds interact with one another... they snap at, nip at, lunge at each other and the VAST majority of the time there's no harm done.