Generally, the male (stag or hart) Red Deer is typically 175 to 230 cm (69 to 91 in) long and weighs 160 to 240 kg (350 to 530 lb); the female is 160 to 210 cm (63 to 83 in) long and weighs 120 to 170 kg (260 to 370 lb). The tail adds another 12 to 19 cm (4.7 to 7.5 in) and shoulder height is about 105 to 120 cm (41 to 47 in). Size varies in different subspecies with the largest, the huge but small-antlered deer of the Carpathian Mountains (C. e. elaphus), weighing up to 500 kg (1,100 lb). European Red Deer tend to be reddish-brown in their summer coats. The males of many subspecies also grow a short neck mane (“mane” of hair around their necks) during the autumn.

The male is a buck, the female is a doe, and the young a fawn. Bucks are 140-160 cm long and 90-100 cm shoulder height, and 60-85 kg in weight; does are 130-150 cm long and 75-85 cm shoulder height, and 30-50 kg in weight. Fawns are born in spring at about 30 cm and weigh around 4.5 kg. The life span is around 12-16 years. All of the Fallow Deer have white spots on their backs, and black tips at the ends of their tails.

Today Mouflon inhabit the Caucasus, northern Iraq, and northwestern Iran. Originally the range stretched further to Anatolia, the Crimean peninsula and the Balkans, where they had already disappeared 3,000 years ago. Mouflon were introduced to the islands of Corsica, Sardinia, Rhodes and Cyprus during the neolithic period, perhaps as feral domesticated animals, where they have naturalized in the mountainous interiors of these islands over the past few thousand years, giving rise to the subspecies known as European Mouflon (O. aries musimon). They are now rare on the islands but classified as feral animals by the IUCN.

The Alpine Ibex (Capra ibex) is a species of wild goat that lives in the mountains of the European Alps and have adapted well at Parque Diana.

Adults weigh 150-200 kg (330-440 pounds), and stand about 45 in (1.15 m) at the shoulders. Pere David Deer have a long tail, wide hooves, and branched antlers. Adults have summer coats that are bright red with a dark dorsal stripe, and dark gray winter coats.