The three females, each of which came to San Francisco from the Los Angeles Zoo, have been inspecting their new habitat without shying away from anything, zoo officials said.
Peccaries are found on the high plains of the Gran Chaco Basin, located in Paraguay, Bolivia and Argentina.
They are endangered due to habitat destruction and hunting, zoo officials said.
Peccaries have not been on exhibit at the San Francisco Zoo since 1982.
More information on visiting the zoo's newest inhabitants can be found online at www.sfzoo.org.