hi

sorry cagney embarrassed you! hmm, excited but snarled? when he snarled, did he looked at the lady or the pup?

yes, you should jerk the collar simple and quick, say a command. and have him sit, then praise with a few strokes or a treat of his choice. try to have this person pet.

yeah, this could be because of cagney got scared when a person bend down but this is something he needs to learn to be nice if you want to keep the walks. was this the first time? if you don't know, try have your friend or someone do the same and see, ...if he doesn't do that again, it's probably was cagney's supense-sense.

just make sure you don't encourage him snarl more.