Here's why:
* High Biodiversity: Rainforests have the highest biodiversity of any biome on Earth. This means they support a vast array of different species of plants, animals, fungi, and bacteria.
* Abundant Resources: The warm, humid climate and constant rainfall create a rich and abundant ecosystem. There's plenty of food, water, and shelter for a wide range of species.
* Complex Food Webs: Due to the high biodiversity, rainforests have complex food webs with many different levels of consumers and producers, leading to a wider range of animal niches.
* Vertical Stratification: Rainforests have multiple layers of vegetation, from the forest floor to the canopy. This vertical stratification allows for diverse habitats and supports a wide range of species adapted to different environments.
While other biomes like coral reefs and savannas also have a diverse range of animal life, the sheer number and variety of species found in tropical rainforests make them the undisputed champion of animal diversity.