If you have a dog who tends to have long hair growing between his toes, it is very important for you to keep it trimmed. If you let this hair grow too long, it will make it harder for your pup to walk and can make walking quite painful. Fortunately, cutting the hair between your dog's toes is not that hard and, unless you have a fidget-rocket for a pup, should only take a few minutes. Of course, if your pup has already mastered basic obedience commands, things will go much easier for both of you.
The last thing your pup wants to do is walk around on paws that hurt each time he takes a step. Think of it in terms of walking around all day with your sock rolled up under your toes. If you allow the hair between your pup's toes to grow too long, it can cause his joints to be out of alignment and result in permanent damage to his bones, joints, ligaments, and tendons.
It is up to you to take care of your pup's needs, this includes trimming the hair around and between his toes or pads. It doesn't take long but will make a huge difference to your pooch as he will be able to continue walking without pain. Leaving it to grow excessively long can result in discomfort and even painful permanent injury.