It sounds like your dog needs a grooming session. Here are some things you can do:
* Take him to a professional groomer. They have the skills and tools to give your dog a safe and stylish haircut.
* Learn to groom him yourself. There are many resources available online and in libraries to teach you how to groom your dog.
* Try using a de-shedding tool. These can help to remove loose fur and reduce shedding.
Remember, it's important to choose a groomer or method that is safe for your dog's breed and coat type.