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SAN FRANCISCO – JUNE 13: Angela Guglielmino puts a leash on a Ferret for a walk at the San Francisco Zoo June 13, 2003 in San Francisco. The recent epidemic of Monkeypox in the U.S., which was linked to infected Prairie Dogs, some of which were being used as pets, has led the CDC to increase awareness to the host of health risks people are exposed to when dealing with exotic pets.

CREDIT: Justin Sullivan/Getty Images