Obviously the choice of collar or no collar is a personal decision - one that you will need to make based on many factors. One of the factors we want you to consider is the danger that lurks when dogs live and play with collars on.
Collars, as a rule, are a good thing. They hold the tags that let people know dogs belong somewhere and have families. But collars that get caught, can be collars that kill. Thousands of dogs die or are injured every year in collar related accidents.
Dogs getting seriously injured or dying from playing and living with collars on is a reality. Play biting is the #1 reported collar accident. Watch dogs play. They are always biting at the neckline. Jaws, teeth and paws are all easily caught in collars. This is how Gracie died.
Your dog's collar and tags can get caught almost anywhere. It's a roll of the dice when this could happen to you.
Make it your business to understand the difference between a quick-release collar and a breakaway collar. Many consumers confuse the two collar types. A breakaway collar will breakaway under pressure and fall off your dog. A quick-release collar requires a human to release the buckle. We have heard story-after-story where the quick-release buckle jams under pressure and will not release necessitating it to be cut off to avoid strangulation. Beware.
Collars that are worn loosely around the neck (think chain, martingale) have a greater chance of getting caught on something. Tags and dog collar charms are also a culprit. Again, beware.