In the Arabian sand gazelle Gazella marica, the male is distinguished by longer, more strongly curved horns with hooked tips, whereas the female usually has slimmer, shorter and nearly straight horns. The trait "females are often hornless" must not be transferred from the Persian goitered gazelle Gazella subgutturosa to the Arabian sand gazelle; the two species are distinguished in modern taxonomic and anatomical studies.
Animal Diversity Web treats the Arabian sand gazelle as a subspecies of the goitered gazelle; in this species males are larger than females (males 20–43 kg, females 18–33 kg), and males have long black horns (203–340 mm) and a larger laryngeal swelling (goitre), while females are mostly hornless, unlike most gazelle species. Other sources treat the reem as a separate species, so these traits are carried over from the broader species.
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5Morphological characteristics and ageing criteria of sand gazelle (Gazella subgutturosa marica) and their use for wildlife managementSRC-QA-GMARICA-ONTOGENY-261009
6Sex ratios of Arabian Sand Gazelle Gazella marica in Mahazat as-SaydSRC-QA-GMARICA-SEX-261009
7Gazella marica — Saudi Arabian sand gazelle species accountSRC-QA-SAND-KSANATURE-261009
8The Book of Antelopes, Vol. III, Gazella marica original type-series comparative description (1898)SRC-GMARICA-ORIGINAL-1898-QA20261009
9Royal Commission for AlUla — Mammals of AlUla field guideSRC-110
The Arabian sand gazelle is a slender antelope with pale sandy fur tending towards reddish-brown on the back, a white belly and a dark tail. The male has two long, curved horns with hooked tips, while the female's horns are shorter and straighter and may be absent. It must be distinguished from the Arabian gazelle in images and models.