Bale is home of the last remaining Ethiopian wolves, (probably at best only 350 left in the world), and it also is one of the best birding areas in the country. Currently on the short list for UNESCO status, the high altitude Bale Mountain plateau is where about 250 Ethiopian wolves live, feeding on giant mole rats and other small mammals. Within the park there are over 60 mammal species including dozens of endemic species and at least 265 bird species including Verreaux's eagle (Aquila verreauxii) , Spot Breasted Lapwing, Auger Buzzard, Black Headed Siskin and Tawny Eagle.
The vegetation and topography across Bale is extremely diverse with the largest afro montane moorland in Africa, alpine moorlands and the Harena secondary rainforest - all occurring within one park. The outer edges of the park have large rock pinnacles and at the top of the mountain there is a very large open plateau. The park is large and covers about 2200 sq. kilometres. The central Sanetti Plateau also has the Rafu lava flow, a vast Afro montane moorland lying between 3500-4500 metres - beautiful, stark and barren yet seemingly filled with life and crystal gin clear lakes around which one sees the ducks and teals.
The terrain is has deep gorges and freezing alpine lakes and open plains dotted with white everlasting flowers. It is a harsh environment to visit, let alone live in, yet is absolutely fascinating and one of the most mesmerising scenes. Apart from the endangered Ethiopian wolf, there is also the Abyssinian hare and golden jackal the Sanetti Plateau also has Blicks grass rat (end) and Starks hare (end).
Other species found in the Harena forest and juniper forests includes Mountain nyala, Meneliks bushbuck, reedbuck and warthogs. Bird life over the plateau, forest and juniper forests includes blue winged goose, Cape rook, yellow billed duck, fan tailed raven, thick billed raven, abdims stork, Baglafecht weaver, mountain thrush, Rogets rail, spot breasted weaver (end), auger buzzard, black headed siskin (end), brown rumped seedeater, streaky seedeater, Tekela lark, Mountain buzzard, chestnut napped francolin, white cheeked turaco (Harena), lanner falcon, Abyssinia owl and white collared pigeon.
The Harena forest vegetation invites you to explore - beautiful secluded waterfalls surrounded by trailing vines and framed by white and purple orchids and wild pink roses are very pretty; the high open hillsides are dotted with heather and everlasting (11 varieties), and Abyssinia hygenica, sage plants (saliva genus) and the mysterious tangled erica forest has trailing Spanish moss (long man’s beard). There is Lady’s mantle (Alchemulla genus) and giant lobelia too. Abyssinian ground Thrush, Abyssinian catbird, Tacazee sunbird and red billed chuff are just some of the bird species here.
Harena on the southern side of the National Park is the completely contrasting and where in 1995 a new monkey was discovered – the Bale Monkey. Harenna Forest is still to be fully explored but animals that we know can be found include giant hogs, elephant and lion. New species are being discovered all the time.