Myotragus of the island of Majorca ("Myotragus pepgonellae") indicate that "Myotragus balearicus", in spite of being a browsing animal, descended originally from grazers. The closest related species to "Myotragus" are ovine, such as the extinct "Nesogoral" of the Plio-Pleistocene of Sardinia, the old "Gallogoral" of France (possible mainland ancestor of both "Myotragus" and "Nesogoral"), "Ovis" (present sheep and mouflon) and the mountain goats of Central Asia. The last ancestor common to "Myotragus" and "Nesogoral" arrived at Majorca and Sardinia around 6 million years ago, a time at which the Straits of Gibraltar were closed and the Mediterranean Sea was a small
Alternatives to animal testing OECD program. The testing of chemicals is labor-intensive and expensive. Often the same chemical is tested in several countries simultaneously, which means that redundant animal tests are performed. To relieve some of this burden, the OECD Council adopted a decision in 1981, stating that data generated in a member country, in accordance with OECD Test Guidelines and Principles of Good Laboratory Practice (GLP), shall be accepted in other member countries for assessment purposes and other uses relating to the protection of human health and the environment. This principle is referred to using the acronym MAD, for the Mutual Acceptance of