The world can be a dangerous place for our pets. There are a multitude of parasites that even a house pet may encounter on a daily basis. Fortunately, modern veterinary medicine has developed excellent methods for parasitic prevention and control. Parasites may attack organs from the heart, intestines, liver, lungs, and skin, among others. Besides attacking organs, parasites carry disease, like Lyme disease, which can seriously harm your pet. Also, some parasites and their diseases may be transmitted to humans, and children are most susceptible.