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Kansas City
A recent study by research firm Brakke Consulting concluded that more than one-third of the $16.8 billion global market for animal-health products is accounted for by the 120 companies based in the Kansas City area.

Since Kansas City was once at the center of U.S. agricultural production, it's a logical place for the animal health industry to evolve. These days, local companies manufacture products for cats and dogs as well as sheep and cows. Kansas City aggressively promotes its subset of its biotechnology industry, branding the region the "Animal Health Corridor" of the U.S., and working with organizations such as the Kansas City Area Life Sciences Institute to organize and fund collaborative research.

NEXT: Rochester, Minn.

Last updated March 26 2008: 11:56 AM ET