Horse
Besides the horse, there are six other species of genus "Equus" in the Equidae family. These are the ass or donkey, "Equus asinus"; the mountain zebra, "Equus zebra"; plains zebra, "Equus quagga"; Grévy's zebra, "Equus grevyi"; the kiang, "Equus kiang"; and the onager, "Equus hemionus".
Northeast Ecological Corridor
Of the eight reptilian families present in the NEC, gecko and anoles have the largest number of species. The first includes two geckos, and three salamanquita geckos, the second family consists of five lizard species. Of the total number of reptilian species documented at the NEC, 11 are endemic, five native and two introduced. An introduced iguana species and two types of boa have also been sighted. Two freshwater turtles and two species of sea turtles live in this area: the hawksbill ("Eretmochelys imbricata") and the leatherback ("Dermochelys coriacea"), the latter which has become the emblematic species of the NEC. Of the exotic species found in the NEC the green iguana ("Iguana iguana") stands out. This reptile is native to Central and South America, and introduced to Puerto Rico in the early 1970s by pet stores. Currently they are considered a pest.