Here is a nice 50-questions quiz on animal muscles both as gross anatomy and in a microscope. This quiz; however, will focus on the gross anatomy of muscles.
Muscle is a soft tissue found in most animals. They are primarly responsible for maintaining and changing posture,locomotion as well as movement of internal organs. They are derived from the mesodermal layer of embryonic germ cells in a process known as myogenesis.
Different skeletal muscles in animals are described as white and red muscle. These different types of skeletal muscles are recruited depending on whether a fast and short versus steady and prolonged locomotion is needed by the animal.