1. (Pharmacology) a drug, agent, or nerve that can cause dilatation (vasodilatation) of the walls of blood vessels. 2. (Physiology) a drug, agent, or nerve that can cause dilatation (vasodilatation) of the walls of blood vessels.
As part of their proposal to âreintroduceâ 750 Mexican wolves, these scientists want to have a self-sustaining population of 250 wolves in southern Utah and northern Arizona â places that fall well outside the predatorsâ historic range.
The Lobo Life. The Mexican gray wolf, or lobo, roamed throughout southeastern Arizona, southern New Mexico, and western Texas through the early 1900s, and south into northern Mexico until the 1980s. Today, around 60 wild wolves roam the headwaters of the Gila River in southeastern Arizona and southwestern New Mexico.exican gray wolves are smaller than their relatives to the northâthe gray wolves that roam the northern Rocky Mountains and Midwest. Weighing in at 50 to 85 pounds, Mexican wolves are about the size of a German shepherd and are the smallest subspecies of the gray wolf in North America.