The average spay or neuter vet surgery is $110 to $175. This increases with larger dogs. The more a dog weighs, the higher the price. One clinic charges $213 for a 50-pound dog surgery spay and $169 for a 50-pound male dog. If the female is in heat, the cost increases more.
They are usually spread like this: 1  A child swallows pinworm eggs, and they travel to the child's intestines. 2  In about a month, the eggs hatch into worms. 3  At night the female worms crawl out the rectum and lay eggs around the child's anus. 4  When the worms lay eggs, it can cause itching.
Pinworms are small, threadlike roundworms found primarily in the colon and rectum. The life cycle of the pinworm  egg, larva, and mature worm  takes place inside the human body and requires from three to six weeks to complete. (Source: excerpt from Parasitic Roundworm Diseases, NIAID Fact Sheet: NIAID)