Dog Ear Anatomy

The size and shape of the pinnae vary by breed. There are three parts to the ear.

Dog Ear Anatomy

A dog that needs an in depth examination of his ears will probably require anesthesia so that the veterinarian can perform the exam easily without causing the dog discomfort or anxiety.

Dog ear anatomy. Dogs can have ear problems in all of these parts of the ear. The outer ear middle ear and inner ear. Beyond the ear flap is the ear canal and the eardrum.

Some are floppy some are tall and pointy and some are just mud and water magnets spaniel owners will be nodding in agreement. It is composed of a cartilage core and skin. The skin covering the auricular cartilage may show breed specific pigmentation.

In some dogs it is of the floppy variety and in others it is straight or upright. The fluid is endolymph. The outer ear includes the pinna the part you see that is made of cartilage and covered by skin fur or hair and the ear canal.

The ear flap is part of the outer ear and stands up tall in some dog breeds or flops over in others. Outer ear the outer ear includes the ear flap also known as the pinna as well as the portion of the ear you can see with the naked eye. When sound waves hit these layers and the inner ear which is the major functional part of a dogs ear the brain assesses and coordinates the identification of the sound wave.

In dogs the pinnae are mobile and can move independently of each other. The membranous labyrinth is an interconnected group of fluid filled membranous sacs. Moreover associated anatomical bodies such as cartilages nerves vascular supply glands and the ear cavity assists in the normal functioning of ear and helps the body to maintain balance.

The shape and size of the external ear vary greatly among different breeds of dogs mainly owing to the auricular cartilage that forms the skeleton of the pinna. Whilst fido may totally ignore you in search of that squirrel his hearing is actually pretty incredible. The inner ear is located within the petrous temporal bone.

Unlike humans that have a very short ear canal dogs have a long narrow ear canal that makes almost a 90 degree bend as it travels to the deeper parts of the ear. Ear anatomy anatomy of the normal dog ear. This is the external most visual portion of the canine ear.

The pinna is shaped to capture sound waves and funnel them through the ear canal to the eardrum. The outer ear cannel is separated from the middle ear by a thin membrane called the eardrum or tympanic membrane. The inner ear contains the membranous labyrinth which is surrounded by the bony labyrinth.

Another part of the dogs head which can come in all shapes and sizes are their ears. It is the largest cartilage of the external ear.

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