Ralph Helfer's Africa U.S.A. animal ranch provided Bruno and other bears (as well as other animals) used in the series. The bears were obtained from Canada or near the Canada-U.S. border because those bears' coats were thicker and more photogenic than those of bears located further south in the U.S. The bears were declawed and had most of their teeth removed. Helfer stated that four bears were used to portray Ben, with other sources naming or listing additional bears, who may have been used in particular scenes or as stand-in bears. Some episodes and sequences also involved bear cubs or other bear characters that may have required additional bears.