Cholecystitis or scarring of the bile duct. The greatest risk factor for cholecystitis is gallstones. Risk factors for gallstones include female sex, increasing age, pregnancy, oral contraceptives, obesity, diabetes mellitus, ethnicity (Native North American), rapid weight loss. Gallstones blocking the flow of bile account for 90% of cases of cholecystitis (acute calculous cholecystitis). Blockage of bile flow leads to thickening and buildup of bile causing an enlarged, red, and tense gallbladder. The gallbladder is initially sterile but often becomes infected by bacteria, predominantly "E. coli", "Klebsiella", "Streptococcus", and "Clostridium" species. Inflammation can spread to the outer covering of the gallbladder and
Species affected by poaching Western states. Commercial poachers kill grizzly bears, moose, bighorn sheep, elk, mountain lions, eagles and snakes. Domestic bear species such as American black bear are slaughtered for their body parts that are used for exotic foods, medicinal purposes and as aphrodisiacs. Walrus is poached for the ivory of their tusks, white-tailed deer for antlers and meat, bobcats for their pelts, and bighorn sheep as trophies. Elk antlers and seal penises are used for medicinal purposes. Paddlefish and sturgeon eggs are sold as caviar. Redfish, shellfish, trout and salmon are poached for meat, snakes for their skins, bald eagles for their