Consult your vet if you notice any of the following changes in your dog's health:

• Weight loss or loss of appetite
• Vomiting
• Sneezing, coughing, wheezing
• Runny nose or eyes
• Excessive thirst or urination
• Excessive licking or scratching
• Diarrhea
• Change in behavior, such as lethargy and depression

Consider pet insurance for sickly dogs or for breeds that have a tendency towards chronic illness. Most pet insurance policies cover only catastrophic illness, however, so be sure to read the fine print before signing on the dotted line.