Grooming a large fearful dog can become quite the challenge. Your big guy can overpower you and cause you and himself harm or injury if he is frightened by what you are doing while you're grooming. Whether your large dog is simply not used to grooming, a little anxious over lots of activities in his life, or nervous because of all the tools you have for grooming sessions, you can ease him into each grooming task by separating them and doing one at a time and letting him explore the grooming tools you are going to use so he's comfortable with them.
A scared dog who is also incredibly large can be like a bull in a china shop. If your pup is scared, try to ease his mind a bit by giving him more control. He's nervous and extra large in size, which may make him a little more clumsy. Grooming tasks may make him a little more fearful than normal.