Common zoonotic threats from pets include ringworm (fungal), toxoplasmosis (from cat feces), leptospirosis (from contaminated urine), rabies (viral), and roundworm or hookworm larvae that penetrate skin. Reptiles and amphibians commonly carry Salmonella on their skin. Children, elderly individuals, pregnant women, and immunocompromised people face higher risk. Prevention includes hand washing after handling pets or cleaning enclosures, regular parasite control, keeping cats' litter boxes clean daily, cooking meat thoroughly, and avoiding contact with stray or wild animals. Veterinary care that keeps pets healthy is itself a public health measure.