You wont be able to stop border collie puppies from chewing because part of the reason they do it is for comfort. As their adult teeth begin to develop they will lose their baby teeth, which can cause their gums great discomfort. Make sure you give them a variety of their own items to chew on. " Constructive discipline . Answered By: Lucius Lind. Date created: Sat, Mar 13, 2021 4:25 AM. Known as the most intelligent of dog breeds, the border collie can be a devilish fiend when bored ...