Hookworm are intestinal parasites that live in the digestive system of your pet. The hookworm attach to the lining of the intestinal wall and feeds on your pet’s blood. Hookworm lay eggs into the digestive tract then passed into the environment through your pets feces. The larvae (young hookworm) that hatch from these eggs can live in the soil. These larvae can infect your pet simply through contact or through the pet eating the larvae when they ingest dirt or during their routine licking.
How do hookworm affect my pet?
hookworms cause internal blood loss by feeding on their blood. This is a serious threat to your pet, especially in young dogs or kittens that may not be able to survive the blood loss with out a transfusion. In older pets the blood loss may be more chronic, and the pet may have diarrhea and weight loss.

worm prevention:

Because hookworms can enter your pets body in different ways, It is important to keep your pet’s living area and the environment clean. Remove feces on a regular basis. Many heartworm preventives also control roundworm and is why we recommend giving on a year round basis. A yearly stool sample should be ran, this will check for any worms or eggs that may be shedding so as not to infect the environment.

Hookworms can potentially infect people. Due to their behavior, young children are at great risk, but immunosuppressed, elderly, and pregnant women are also at risk. Having regular fecal examinations performed on your pet and treating when indicated can help minimize the chances of human transmission