Brought animal in?

Has anyone here had someone rush in with an animal in distress, i.e. dog gets hit by car in the immediate vicinity, and they show up in a mad dash like when people roar into the parking lot and drop their recently shot (was just kidding his own business) buddy off at the front door, or that one time they left a man eviscerated at our ambulance bay and rang the doorbell?

Has anyone seen this at their ER with an animal? Has anyone tried to help? I know it's typically a big no-no as we're not licensed to practice veterinary medicine, but this bleeding heart would WANT to help if I could.