Frog legs are rich in protein, omega-3 fatty acids, vitamin A, and potassium. They are often said to taste like chicken because of their mild flavor, with a texture most similar to chicken wings. The taste and texture of frog meat is approximately between chicken and fish. Frogs are raised commercially in certain countries, for example Vietnam. Frog muscles do not resolve rigor mortis as quickly as muscles from warm-blooded animals (chicken, for example) do, so heat from cooking can cause fresh frog legs to twitch.