A "herd" refers to a group of animals, typically of the same species, that live and move together. Common examples include cattle, elephants, and deer. Herding behavior provides safety in numbers, as it helps protect individuals from predators and increases foraging efficiency. Herds can vary in size and structure, often depending on the species and environmental conditions. Some herds are led by a dominant individual, while others may have a more fluid social structure. The dynamics within a herd can influence mating, feeding, and migration patterns, showcasing the importance of social interactions in animal behavior.