Arizona Game and Fish biologists euthanized three bighorn sheep that had been in contact with escaped domestic sheep. Regional supervisor Mike Sumner said it was needed to prevent disease from spreading to the 700-800 bighorns in the mountains near Yuma. An estimated 300 domestic sheep escaped from an enclosure, and some were known to be carrying a contagious disease that could be fatal to bighorns. Some of the escaped sheep were located but others remain missing.
Read more from the Associated Press here.