Raccoons can be dangerous to humans. They are carriers of rabies, a deadly disease, and can transmit other illnesses such as raccoon roundworm and leptospirosis through their feces. While raccoons are generally shy and tend to avoid humans, they can become aggressive and attack if they feel threatened, cornered, or are protecting their young. Their sharp claws and teeth can cause serious injuries. Raccoons also pose risks by invading homes, causing property damage, and spreading diseases to pets. It is important to avoid approaching or provoking raccoons and seek medical attention immediately if bitten or scratched by one.