There are currently 2 male desert bighorn sheep in Aragon Zoo. The breeding herd at Chapultepec Zoo produces lambs almost every year. The mexican desert, tropical jungle and african sections in aragon are very good and were built after the 2002 renovation. Sadly the renewal was halted due to the economic crisis affecting Mexico and the "old section" of aragon is very outdated. my review of aragon zoo gives more details.
