LIBERIA

10c, 31c: this WWF set features the Pygmy Hippo, an endangered endemic species to W. African waterways and humid forests

SIERRA LEONE

    L9800 se-tenant strip: WWF set of Greater Flamingos feeding, breeding and taking flight

SENEGAL

125fr: this 2007 national parks issue features an antelope in the central Niokolo-Koba reserve