They don't always get top billing, but it's the four-legged stars who often steal the show.
Jim(Credit: CBS / Ron P. Jaffe)
Not since Eddie on "Frasier" has a dog stolen as many scenes as Jim, a Brussels griffon, does on CBS' "Mike & Molly."
Played by Moose the Jack Russell terrier, super-smart Eddie was a great foil to the uptight title character, played by Kelsey Grammer, on the long-running NBC sitcom "Frasier."
Stan(Credit: Disney Channel / Tony Rivetti)
As voiced by actor-comedian Stephen Full, Stan, the star of "Dog with a Blog," is hilariously deadpan and, often, quite wise as he guides those humans who can hear him talk (the kids) in the sitcom that debuted in 2012.
Sheriff Roscoe P. Coltrane was rarely without trusty companion Flash the basset hound on CBS' "The Dukes of Hazzard."
Lassie the majestic, and so very helpful, collie has popped up in a variety of media, including books and film, but it was the popular dramatic TV show on CBS, from 1954 to the early 1970s, that made the pooch a household name.
Wishbone(Credit: Big Feats Entertainment)
Wishbone, PBS' literature-loving Jack Russell terrier, imagined himself as a number of characters from famous stories. He embodied Ichabod Crane for "Halloween Hound: The Legend of the Creepy Collars," based on Washington Irving's "The Legend of Sleepy Hollow."
Murray(Credit: NBC / Michael Tighe)
NBC's 1900s sitcom, "Mad About You," centered around upwardly mobile New York-based couple Paul (Paul Reiser, center) and Jamie (Helen Hunt, second from left) and their lovable collie mix Murray (Maui).