What size is your dogs collar? You might want to try a cat collar (not the kind with the release buckle , like this : https://www.amazon.com/dp/B07875571...&pd_rd_r=5ff41d2a-4d27-4649-b8e2-8f9ce23060de
or
if your collar is already a cat sized collar, try a ribbon or a whelping collar (you can hot glue/tape two together to make one sizeable for your dog) and work up heavier and heavier ribbons and felt until you get to the size and weight of the collar you want to use
or
if your collar is already a cat sized collar, try a ribbon or a whelping collar (you can hot glue/tape two together to make one sizeable for your dog) and work up heavier and heavier ribbons and felt until you get to the size and weight of the collar you want to use