Anser cygnoides domesticus, commonly known as the domestic goose, is a domesticated form of the swan goose. It has a robust body, long neck, and a distinctive knob at the base of its bill. These geese are known for their sociable nature and adaptability, thriving in various environments, from farms to urban parks.

The Anser cygnoides domesticus, commonly known as the domestic goose or Chinese goose, is derived from the wild swan goose species (Anser cygnoides) native to Asia. The wild ancestors of this domesticated species are found in eastern Asia, particularly in regions of Mongolia, northern China, and southeastern Russia.

The wild swan goose typically inhabits wetlands, including lakes, rivers, and marshes, often in open landscapes. These areas are characterized by temperate climates with seasonal variations, including cold winters and warm summers. The presence of abundant water sources is crucial for their survival, providing both food and nesting sites.

In their natural habitat, swan geese are primarily herbivorous, feeding on a variety of aquatic plants, grasses, and grains. They are adapted to grazing in open areas, often forming large flocks. The domesticated Anser cygnoides domesticus has been selectively bred for traits beneficial in agricultural settings, such as increased size and docility, which may alter their ecological niche compared to their wild counterparts.