Animals are not just inhabitants of their environments; they are active architects that shape the world around them through several critical functions:
: Predators like wolves and lions help keep herbivore populations in check, which prevents overgrazing and protects plant biodiversity. Ecologia animale
: "Nature's plows," like earthworms, decompose organic material to enrich soil fertility. Other animals contribute to vital nutrient cycles, including the carbon and nitrogen cycles. Animals are not just inhabitants of their environments;