In addition to the four Gildersleeve films, Peary appeared in the Walt Disney movie A Tiger Walks (1964) and the Elvis Presley film Clambake (1967).
He also worked in television, playing murderer Freddy Fell in the 1965 Perry Mason episode, "The Case of the Lover's Gamble."
That same year he played Peabody in the Rod Serling-scripted "Sheriff of Fetterman's Crossing" episode of Lloyd Bridges' Western series The Loner.
He also appeared in recurring roles in several sitcoms, such as Herb Woodley in the TV version of Blondie, and as Mayor LaTrivia in the TV version of Fibber McGee and Molly, Peary also made guest appearances in numerous sitcoms during the 1960s, including The Dick Van Dyke Show, My Three Sons, The Addams Family, My Mother the Car, Petticoat Junction, That Girl, The Brady Bunch and Love, American Style.
In the 1960s and '70s, Peary was also featured in a series of popular television ads for Faygo pop.

In the 1970s, Peary found work as a voice actor, most memorably as Big Ben, the whale with a clock in its tail, in two Rudolph the Red-Nosed Reindeer productions, Rudolph's Shiny New Year (1976) and Rudolph and Frosty's Christmas in July (1979), the latter being Peary's final acting credit.
In addition to the four Gildersleeve films, Peary appeared in the Walt Disney movie A Tiger Walks (1964) and the Elvis Presley film Clambake (1967). He also worked in television, playing murderer Freddy Fell in the 1965 Perry Mason episode, "The Case of the Lover's Gamble." That same year he played Peabody in the Rod Serling-scripted "Sheriff of Fetterman's Crossing" episode of Lloyd Bridges' Western series The Loner. He also appeared in recurring roles in several sitcoms, such as Herb Woodley in the TV version of Blondie, and as Mayor LaTrivia in the TV version of Fibber McGee and Molly, Peary also made guest appearances in numerous sitcoms during the 1960s, including The Dick Van Dyke Show, My Three Sons, The Addams Family, My Mother the Car, Petticoat Junction, That Girl, The Brady Bunch and Love, American Style. In the 1960s and '70s, Peary was also featured in a series of popular television ads for Faygo pop.
In the 1970s, Peary found work as a voice actor, most memorably as Big Ben, the whale with a clock in its tail, in two Rudolph the Red-Nosed Reindeer productions, Rudolph's Shiny New Year (1976) and Rudolph and Frosty's Christmas in July (1979), the latter being Peary's final acting credit.
Harold Peary