75% of Ecatepec de Morelos municipality is urbanized, on this territory there are no big animals; in the highlands of Sierra de Guadalupe live principally small mammals such as mouse, rabbit, gray squirrel, bat and gopher, birds, such as cenzontle and sparrow. The flora in Sierra de Guadalupe is represented by oyamel pines, oaks, ocote pines, century plants, prickly pears, zacatón (mountain grass) and other.[7]