Originally posted by Vette
What are those funky muzzle looking things for,, do they try to bite each other while running,, or does it keep mud and stuff off their nose and face?

very pretty dogs and great pictures!
The muzzles they are wearing are standard racing muzzles that are used in the US and Mexico.

while racing, their instinct (and training) is to chase the lure, not to attack or fight with dogs they are racing with. Though the muzzles do offer a bit of protection from any bites they are used primarily for photo-finishes.