Birds
A diverse grouping of creatures within the animal kingdom, characterized by their distinct physiological and environmental affiliations. This category encompasses avian species known as birds, which are warm-blooded vertebrates featuring feathers, beaks, and hard-shell eggs. It also includes freshwater animals, a broad spectrum of aquatic organisms that live in non-marine water sources. Actinopterygii, or ray-finned fishes, the largest class of vertebrates, are also part of this category. Arthropods, a phylum of invertebrate animals with exoskeletons, segmented bodies, and paired jointed appendages, are included. Amphibians, cold-blooded vertebrates that spend part of their life in water and part on land, are also encompassed. This category unifies these distinct groups under their shared classification as members of the animal kingdom.