My Chi Pin has been having a cough like a cat coughing up a hairball?

My Chi Pin has been having a cough like a cat coughing up a hairball we thought it was kennel cough but after 3 weeks of treatment that has been ruled out they are telling me he may have a Tracheal collapse The vet is telling me he should be ok just keep him out of the heat and not too excited how serious is this... show more My Chi Pin has been having a cough like a cat coughing up a hairball we thought it was kennel cough but after 3 weeks of treatment that has been ruled out they are telling me he may have a Tracheal collapse The vet is telling me he should be ok just keep him out of the heat and not too excited how serious is this is my vet right ?
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