What Is Special About a Collar for Large Dogs?
A collar for large dogs is much like a regular dog collar, except it's sized for and suited to big dogs. Collars for large dogs should be durable enough to stand up to large, heavy dogs, even if they pull on the leash. They should be long enough to fit round the larger neck of a big dog, yet not allow the dog to slip his head out.
There's no single best type of collar for large dogs; it comes down to what best suits you and your dog.
It's not really necessary for your dog to wear a collar when at home. In fact, your dog could get injured wearing a collar unsupervised, and it's more likely to rub the dog’s neck if worn all day.
Large dogs, like all dogs, are legally required to wear collars in public spaces in many states, although local laws can vary. Generally, your dog is also required to wear an ID tag on the collar that shows your name and address, even if the dog is microchipped.