Qhov zoo tshaj plaws sawv cev ntawm tshis ntawm high-milk yug yog Swiss Zaanen, lub birthplace ntawm uas yog lub nroog ntawm Zaanen, nyob hauv lub Alps. Cov tsiaj sib txawv los ntawm lwm cov tshis los ntawm nws cov khoom tsim tawm high, zoo fertility thiab zoo heev adaptability rau cov nyom climatic mob.
