The fauna of Toronto include a variety of different species situated within the city limits. Toronto contains a mosaic of ecosystems that includes forests, rivers, streams, and wetlands, which allows it to support a large variety of fauna. Approximately 90 per cent of animals that inhabit the city reside within the Toronto ravine system, including its creeks and rivers. However, several animals have adapted to live within Toronto's urban environment, and reside within its urban landscape and urban parks.