Animal signals are ways that animals communicate with each other. These signals can be visual, like a bird's colorful feathers, or auditory, like a wolf's howl. Animals use these signals to convey important information, such as warning others of danger, attracting mates, or marking territory. Each species has its own unique set of signals that help them survive and thrive in their environment. In addition to visual and auditory signals, animals also use chemical signals, known as pheromones, to communicate. For example, ants leave scent trails to guide others to food sources. Understanding these signals helps researchers learn more about animal behavior and the complex interactions within ecosystems.