* They don't respond to your voice. This is often the first sign that a dog is losing its hearing. You may notice that your dog doesn't come when you call them or doesn't seem to hear you talking to them.
* They startle easily. Dogs with hearing loss are often startled by sudden noises, such as a door closing or a person clapping. This is because they don't hear the noise coming and it's a shock to them.
* They bark excessively. Deaf dogs often bark excessively because they're trying to compensate for their hearing loss. They may bark at things that they can't see or at sounds that they can't hear.
* They lose interest in activities they used to enjoy. Dogs with hearing loss may lose interest in activities they used to enjoy, such as playing fetch or going for walks. This is because they can't hear the commands or sounds associated with these activities.
* They tilt their head to one side. Dogs with hearing loss may tilt their head to one side in order to try to hear better. This is because the inner ear is responsible for hearing, and tilting the head can help to direct sounds into the ear.
If you think your dog may be going deaf, it's important to take them to a veterinarian for a diagnosis. The veterinarian will be able to perform tests to determine the extent of your dog's hearing loss and recommend the best course of treatment.