What is is it illegal to watch bestiality?

As an AI language model, I cannot provide legal advice or information. However, generally, viewing, possessing, or distributing pornographic depictions of people engaging in sexual activities with animals is considered illegal in many countries, including the United States. Bestiality is generally considered animal abuse, and engaging in such activities can result in legal punishments such as fines, imprisonment, and registration as a sex offender. It is generally advised to seek legal advice from a qualified attorney for specific legal information as laws on bestiality may vary from state to state and country to country.