How do skeleton types and regulations classify animals?

Skeleton types and regulations classify animals based on their structural characteristics and evolutionary adaptations. Animals can be broadly categorized into those with an endoskeleton (like mammals and birds), exoskeleton (like insects and crustaceans), or hydrostatic skeleton (like jellyfish and earthworms). These classifications help in understanding their physiology, movement, and ecological roles. Additionally, regulations often pertain to conservation status and legal protections, affecting how different species are managed and studied.