The answer to 'are rat dangerous' is yes, rats can be dangerous to humans. Rats can carry and transmit a number of diseases, including salmonella, hantavirus, and leptospirosis. They can also cause property damage by chewing through walls, electrical wiring, and insulation. Rats have strong teeth and claws and can become aggressive if cornered, potentially biting or scratching humans.
While most rats will avoid humans if possible, they can pose a significant health and safety risk, especially in homes and businesses. Proper prevention, identification, and removal of rats is important to protect your family and property.