If your dog has medium or long hair, you might find it necessary to trim the hair that grows between his toes and the pads on his paws from time to time. If you allow this hair to grow too long, it can make it difficult and painful for him to walk.
The good news is that trimming this hair is not difficult and can be done relatively quickly as long as your pup doesn't fidget too much. It will go a lot more quickly if your dog has already been taught to obey basic commands such as 'sit', 'down', and 'stay'.
For your dog, walking on large tufts of hair between his toes and pads is akin to you trying to walk around with a sock that has rucked up under your foot. In other words, it is painful and miserable. Left to grow too long, the hair can make walking very difficult and could result in excessive strain being placed on his joints and muscles.
Your pup counts on you to take care of his needs, including grooming. Paws that have too much hair between the toes and pads can be uncomfortable if not outright painful for your pup to walk on. Excess hair under his paws can keep his pads from making solid contact, allowing his paws to slip out from under him. This could result in a painful injury. It only takes a few minutes to complete this task, but the end result is definitely worth it.