Measure the circumference of the dog's neck and add 4 inches (9 cms).
You should be able to put two fingers between the neck and the collar.
1/2 - 5/8 inches is best for small dogs and puppies.
3/4' for medium sized dogs.
1 - 1 1/2 inches for large dogs.
Look also under Gummi Collars for rubber collars that have glow in the dark spikes. There is also a flashing collar to let your dog stand out in the dark.
There is a rubber pronged choker chain under Training Collars. A more kinder way to train your dog.
There is also a collar to cool your dog down in the summer.
