Anser is a waterfowl genus that includes the grey geese and the white geese in the bird family Anatidae. The genus name comes from the Latin word anser meaning "goose".

1/ Bar-headed goose (Ngỗng Ấn độ, Anser indicus)
2/ Greylag goose or graylag goose (Ngỗng trời, Ngỗng xám, Anser anser)