Dolphins can be dangerous to humans, but attacks are relatively rare and often happen when humans provoke or agitate the animals. Dolphins have sharp teeth that they usually use to rip apart their prey, but they can also bite humans and cause serious injuries. In some cases, dolphins have attacked boats or interacted with humans in territorial ways. Reasons why dolphins may attack humans include feeling threatened or agitated by human presence, seeing humans as a potential threat to their territory or prey, or protecting their young. Dolphins are wild animals and should be treated with caution and respect. Swimming with dolphins in captivity can cause them stress and lead to aggressive behavior towards humans. While there have been reports of dolphins sexually assaulting humans, these incidents are rare and not well-documented.