HabitatThe natural home or environment where an animal, plant, or organism lives and finds food, water, shelter, and mates.CarnivoreAn animal that eats mainly or exclusively meat. Lions, tigers, and sharks are carnivores.HerbivoreAn animal that eats only plants. Elephants, giraffes, and rabbits are herbivores.OmnivoreAn animal that eats both plants and meat. Bears, pigs, and humans are omnivores.EcosystemA community of living organisms (plants, animals, microbes) interacting with their physical environment as a system.CamouflageAn animal's ability to blend in with its surroundings using colour, pattern, or shape to hide from predators or prey.MigrationThe seasonal movement of animals from one region to another, usually for food, breeding, or warmer weather.HibernationA state of deep sleep and slowed metabolism that some animals enter during winter to conserve energy when food is scarce.MetamorphosisA dramatic transformation in body form — like a caterpillar becoming a butterfly or a tadpole becoming a frog.EndangeredA species at serious risk of extinction. The IUCN Red List classifies species from Least Concern to Critically Endangered.ExtinctA species that no longer exists anywhere on Earth. The dodo, woolly mammoth, and dinosaurs are extinct.NocturnalActive mainly at night. Owls, bats, and many cats are nocturnal, with special adaptations for seeing in the dark.Apex PredatorA predator at the top of the food chain with no natural predators of its own. Tigers, eagles, and great white sharks are apex predators.BiodiversityThe variety of all living things in an area. Higher biodiversity means a healthier, more resilient ecosystem.ConservationThe protection and careful management of wildlife and natural habitats to prevent species from going extinct.EcholocationA biological sonar used by dolphins, bats, and some whales — they emit sounds and listen to echoes to locate objects and prey.Food ChainThe sequence of who eats whom in an ecosystem: plants are eaten by herbivores, which are eaten by carnivores.SymbiosisA close, long-term interaction between two different species — it can be mutualistic (both benefit), parasitic, or commensal.TerritoryAn area that an animal defends from others of the same species, usually for access to food, mates, or nesting sites.VertebrateAn animal with a backbone (spine). Mammals, birds, reptiles, amphibians, and fish are all vertebrates.InvertebrateAn animal without a backbone. Insects, spiders, jellyfish, and octopuses are invertebrates — they make up 97% of all animal species.BioluminescenceThe production of light by living organisms through chemical reactions. Fireflies, anglerfish, and some jellyfish are bioluminescent. 