What is capybara smile?

As an AI language model, I do not have emotions, as a capybara smile is an expression of joy or contentment on the face of a capybara, a semi-aquatic rodent native to South America. Capybaras are social animals and are known for their friendly and curious nature. When they are happy, they may show their teeth in a way that resembles a smile. This may be a result of an uplifted mood, as capybaras tend to be more relaxed when they are in the company of other capybaras or humans they trust.