Ear mites and bacterial and/or yeast infections are other causes of ear problems that can lead to aural haematomas. Dogs with hairy ear canals or ones with pendulous ears preventing adequate ventilation are more prone to infections.
What happens if a haematoma is not treated?
Left untreated, an aural haematoma may eventually resolve by itself, but the ear becomes misshapen (just like the ‘cauliflower ear’ of boxers), and the underlying reason for the haematoma is not addressed, leading to further trauma and damage to the ear, as well as considerable pain for the dog.
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Inhalation & Ingestion
It is also possible for dogs to either inhale a grass seed – especially when running through long grass – or to ingest it accidentally whilst chewing or licking their coats, or when eating food directly off the ground. Grass seeds that get into the lung or airways pose a particularly sinister risk as they are impossible to detect, and signs develop late in the course of the infection. The dog may be fine, then suddenly develop signs of a chest infection, pneumonia or collapsed lung with no history of any other upper respiratory problems. All the vet can see is the infection and damage to the lungs, and it is possible for the dog to die before the real cause of the problem is detected.