If you love your dog and want it to live a long, healthy life, it's important to keep an eye on your dog's weight. Sadly, obesity is quickly becoming one of the biggest medical problems veterinarians see with their patients. It is estimated that 45 percent of all pet dogs are now considered overweight or obese. Dogs with weight problems live shorter lives, have more joint and breathing problems, and are prone to develop diabetes. Here are some tips to help you determine if your pet is overweight along with a few ideas on how to solve the problem.