Look for a Martingale Leash I know you don't know what I'm saying look it up.
How to Determine a Size
To determine the correct collar length, measure your dog’s neck at the smallest point (usually right behind the ears). Choose the collar that covers this size.
Width is largely a personal choice, keeping in mind 2 basic factors:
Wider collars are more comfortable
Dogs with short necks look weird with wide collars
You may find the following helpful in making your decision:
Collar Width Ideal For...
3/4 Inch Very small or short necked dogs such as: Italian Greyhound, Shi-Tsu, or Pug.
1 Inch Small to medium dogs such as: Cocker Spaniel, Beagle, or Basset Hound.
1 1/2 Inch Medium to large dogs such as: Labs, Retrievers or Collies.
2 Inch Very large, long necked dogs such as: Greyhounds and Borzois.
Fitting the Collar
Adjust the collar so that, when pulled, the metal sliders are about 1 inch apart. When loose the collar should easily slip onto your dog’s head but be slightly difficult to slip off.
What is a Martingale Collar?
A martingale collar is also called a limited choke collar or a humane choke collar. It is in fact the gentlest version of the choke collar for two basic reasons:
The amount of ‘choke’ can be controlled, and,
The design of the collar provides for even pressure to the dog’s neck rather than pulling at the throat.
The martingale collar is ideal for dogs who tend to slip their heads out of flat collars. For these dogs, the collar can be adjusted to fit their neck exactly so that when they pull, they cannot escape, but at the same time they are not being choked.
I don't like this system but it's an idea, mine is all one like a dog show leash about an inch wide that slips over his head. Now we use the 24 foot roller leash after he learned how to walk and what his limits are.
Look up Martingale leashes. This is just a collar, I'm talking about all in one.
Yes you should have a collar with his dog tags and license with rabies shot, maybe his name and a phone number and address if he runs away that could be called.
Remember this could be 15 years out of your life Allexys you have to take care of it, about as smart as a two to three year old human baby. Always looking for trouble they are.http://www.youtube.com/watch?v=E84VS2M1SLk