*Colonise the [[Trachea Inflammatory - Pathology#Infectious causes of tracheitis|trachea of dogs]]
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*Larva and adults accumulate in submucosal nodules of up to 1cm diameter at the tracheal bifurcation.
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*Minimal inflammatory host reaction to the nematodes when they are alive - the size of the nodule is related to the number and size of the nematodes within it.
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*When the parasites die, an intense foreign body reaction develops
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*Tracheal nodules can cause coughing, usually in young dogs <18 months old.
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*Severe infestation can cause significant occlusion of the airway.
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*Uncommon, but sometimes seen in coughing greyhounds