I keep the collars on all 3 of my Goldens, Jennifer, for the same reasons that you and Denyce stated. I just feel safer. Murphy, the old lady Lab, does not wear a collar, but she also rarely goes outdoors (maybe 2-3 times/day) and she has a recurring cyst on her neck that has totally healed up since we took her collar off, but her situation, as I said, is very different than the other 3.

I'd leave it on, and just keep working to find the most comfortable, safe one, for him.

Logan