Heuglin's gazelle (Eudorcas tilonura), also known as the Eritrean gazelle, is a species of gazelle found east of the Nile River in Eritrea, Ethiopia and Sudan. It was considered a subspecies of the red-fronted gazelle (E. rufifrons) or conspecific with Thomson's gazelle (E. thomsonii) and Mongalla gazelle (E. albonotata) by some authors in the past. This small gazelle stands nearly 67 cm (26 in) at the shoulder and weighs between 15 and 35 kg (33 and 77 lb).