A Mixture of Butorphanol, Azaperone, and Medetomidine for the Immobilization of American Beavers ( Castor canadensis).

A total of 58 American beavers ( Castor canadensis) was immobilized with butorphanol, azaperone, and medetomidine (BAM) for the purpose of health assessments, sex determination, and placement of very high-frequency tail transmitters in a subset of animals. Isoflurane gas anesthesia was available to aid with induction when needed, and all animals received supplementary oxygen. Thirty-one beavers immobilized with a mean (SD) dose of 0.

Intravascular large B-cell lymphoma presenting as acute hemorrhagic cerebral infarct with delirium.

Intravascular large B-cell lymphoma (IVLBCL) is a cumbersome diagnosis to make in vivo, particularly because of its elusive nature and ability to be a relatively nonspecific 'great mimicker'. Although it frequently has skin manifestations, it often escapes diagnosis due to its angiotrophism and predilection for vessels that are difficult to biopsy (e.g.

Behavioral responses of bison and elk in Yellowstone to snowmobiles and snow coaches.

Managers of public lands are charged with protecting some of our most important natural resources and ecosystems, while providing for their use and enjoyment by visitors. Almost one million visitors entered Yellowstone National Park by motorized means on snowmobiles (87%) or snow coaches (13%) during 1992-2003. Most vehicles toured the central portion of the park where bison (Bison bison) and elk (Cervus elaphus) concentrate in geothermal areas.