* Annual Breeding Season: Many animals have a specific time of year when they mate and reproduce. This is often influenced by factors like food availability, weather, and day length.
* Annual Migration: Some animals, like birds and whales, migrate long distances every year to find better food sources or breeding grounds.
* Annual Molting: Some animals, like birds and snakes, shed their skin or feathers once a year to replace them with new ones.
* Annual Hibernation: Certain animals hibernate during the colder months to conserve energy and survive when food is scarce.
* Annual Growth Cycles: The growth patterns of many animals follow a yearly cycle, with periods of rapid growth and periods of slower growth.
In general, "annual" describes events or activities that happen on a yearly basis in an animal's life cycle.