Although sometimes the symptoms are obvious, it may not always be easy to identify when your dog is sick. Inherent in a dog’s survival is a tendency to hide illness as a way to protect 
himself from being seen as a weak link in their pack. It’s important to be aware of the more subtle indications that your dog may be not well, so make sure you pay attention to your pooch’s everyday demeanor for signs that your dog might be ill.
Occasionally dogs may experience minor digestive problems or upset stomachs that upset their appetite just like we do. However if you detect a general or drastic difference in your pup’s eating habits it could indicate a serious problem. There are also many factors that can affect your dog’s energy, but activity level and interest is something to notice.
Many physical and behavioral signals can signify your furry buddy is under the weather as well. Another tale-tell sign that your dog might be ill is if you have a normally outgoing pet who suddenly becomes aloof and detached. Overall, if you have any suspicions that your dog is sick based on his behavior or your gut instincts, go ahead and make an appointment with your veterinarian. No harm can come from getting your pet checked out to make sure he is healthy and strong!
For more detailed information about how to know if your pooch is ailing, and for other terrific pet-related articles, please check out the great resources at petparents.com.