As millions of Americans hop on planes to enjoy summer vacations, their dogs are left at kennels to be pampered and pruned. Unfortunately, those doggy spas can also be bustling with nasty diseases like Heartworm, Giardia and Leptospirosis. Having a dog is a major responsibility, which is why it’s so important to understand the needs and desires of your four-legged friend. From hot weather care to understanding how to stop a puppy from chewing on furniture, wrangling your pooch is no easy task. Dog kennels can be hotbeds for diseaseThough most facilities have rigorous cleaning procedures and sa…