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    10. KENNEL COUGH

    Illness: Kennel cough is infectious canine tracheobronchitis, a highly contagious respiratory disease.

    Symptoms: Dry hacking cough, retching, watery nasal discharge, pneumonia, fever, lethargy

    Who's Affected & Why: Puppies and older dogs, those who who have a weak immune system, are at increased risk of kennel cough. Dogs confined together in an enclosed environment, such as a kennel or animal shelter, are most susceptible to the infection. Just like colds, it can easily be spread from dog to dog.

    How to Prevent & Cope: A commercial kennel cough vaccine that contains an anti-bordetella agent is available to help prevent kennel cough from occurring. (petMD)