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.
The fertilized female mite deposits oval eggs at intervals in the tunnel she makes in the upper skin layer (epidermis). Usually, she will remain in the tunnel for her lifetime, depositing eggs at 2- to 3-day intervals for a 2-month period. Larvae hatch in 3 to 5 days and move freely over the skin. They and nymphs often are found in hair follicles. Within 4 to 6 days after egg hatch, the nymph transforms into a male or an immature female. The female makes a temporary burrow in the skin before mating. Maturity is reached 10 to 14 days after hatching.