Fallow-deer

Deuteronomy 14:5 (RSV, "Wild goat"); 1 Kings 4:23 (RSV, "roebucks"). This animal, called in Hebrew Yahmur , From a word meaning "to be red," is regarded by some as the common fallow-deer, the Cervus dama, which is said to be found very generally over Western and Southern Asia. It is called "fallow" from its pale-red or yellow colour. Some interpreters, however, regard the name as designating the bubale, Antelope bubale, the "wild cow" of North Africa, which is about the size of a stag, like the hartebeest of South Africa. A species of deer has been found at Mount Carmel which is called Yahmur by the Arabs. It is said to be similar to the European roebuck.

Source: Easton's Bible Dictionary
Fallow deer

(called fallow from its reddish-brown color) (Heb. yachmur ). The Hebrew word, which is mentioned only in ( 14:5) and 1Kin 4:23 Probably denotes the Alcelaphus bubalis (the bubale or wild cow) of Barbary and North Africa. It is about the size of a stag, and lives in herds. It is almost exactly like the European roebuck, and is valued for its venison.

Source: Smith's Bible Dictionary