I have. I imagine super OP zombie dog was flying off to take out my battle hind. Thankfully he missed.
Stop playing TDM and play search&rescue if you think the dog is immortal
In search&rescue the dog dies quickly
People who camp with Riley annoy me to no end. Just because I have to be within 50 feet and he'll start chasing me. Case in point guy's camping in the 2nd floor of a building and I go by, but out of his sight. Riley will immediate go out the nearest window and land on me. Seems to happen without fail.
Whenever I see someone on my teammate camp with Riley HC, I make sure to put down their dog, extra satisfaction since there's no penalty for doing it.