Dogs and cats usually get infected by eating that carry the parasite larvae. Once swallowed, the larvae burrow through the intestinal wall, hitch a ride through the blood vessels, and eventually settle in the bladder to mature into adults. The Human Perspective
Parasites often have complex life cycles that involve "middlemen" or intermediate hosts. The Pet Perspective (Dogs and Cats) bladder worm
Humans aren't typically infected by the animal version. Instead, "bladder worm" often refers to Urinary Schistosomiasis , caused by Schistosoma haematobium . These worms live in the blood vessels surrounding the bladder. Dogs and cats usually get infected by eating