What’s wrong with a dog that scratches its ears and grunts?

Dogs that keep scratching their ears and grunting may have itchy, uncomfortable ears. The main reasons for this are as follows: a. Itchy ears caused by fungal, bacterial or parasitic infections, mosquito bites, etc. The dog will scratch. Secondly, itching caused by an injury to the ear (such as accidental bruising, or injury from fighting with other dogs) will also cause your dog to scratch its ears. It is important to take the dog to hospital for examination and treatment and to wear an Elizabethan collar to prevent the dog from scratching itself.