The Ethiopian wolf (Canis simensis), also known as the Abyssinian wolf, Abyssinian fox, red jackal, Simien fox, or Simien jackal is a canid native to Africa. The numerous names reflect previous uncertainty about its taxonomic position, but it is now thought to be related to the wolves of the genus Canis rather than the foxes it superficially resembles. The Ethiopian wolf is found at altitudes above 3,000 metres (9,800 ft) in the Afro-alpine regions of Ethiopia, and is the top predator of the ecosystem. It is the most endangered species of canid that has not been extinct in the wild, with only about seven populations remaining, totalling roughly 550 adults. The largest population is found in the Bale Mountains in southern Ethiopia, although there are also smaller populations in the Semien Mountains in the north of the country, and in a few other areas. Claudio Sillero-Zubiri at the University of Oxford is the zoologist most closely associated with efforts to save this species of wolf, particularly with his work for an oral rabies vaccine to protect them from the disease passed from local dogs. His work is supported by the Born Free Foundation. A rabies outbreak in 1990 reduced the largest known population, found in the Bale Mountains National Park, from about 440 wolves to less than 160 in only two weeks.