Other animals he is less friendly with include Salty the Seal, Butch the Bulldog, Figaro the Kitten, Chip 'n Dale, Peg Leg Pete, Spike the Bee, Bent-Tail the Coyote, Milton the cat and other characters. In Disney's 1937 animated short Pluto's Quin-Puplets, Pluto has a son who is simply referred to as "Pluto Junior." In the 1946 animated short Pluto's Kid Brother, Pluto has a younger brother named K.B. Appearances Pluto first and most often appears in the Mickey Mouse series of cartoons. On rare occasions, he is paired with Donald Duck ("Donald and Pluto", "Beach Picnic", "Window Cleaners", "The Eyes Have It", "Donald's Dog Laundry", & "Put Put Troubles"). The first cartoons to feature Pluto as a solo star were two Silly Symphony shorts, Just Dogs (1932) and Mother Pluto (1936). In 1937, Pluto appeared in Pluto's Quin-Puplets which was the first installment of his own film series, then headlined Pluto the Pup. However, they were not produced on a regular basis until 1940, by which time the name of the series was shortened to Pluto. His first comics appearance was in the Mickey Mouse comic strip in July 1931, two months after the release of The Moose Hunt. In 1938, Pluto headlined in the Silly Symphony Sunday comic strip, in an adaptation of his Silly Symphony short, Mother Pluto. Pluto was later featured in several sequences of the Silly Symphony strip in 1939 and 1940. Pluto Saves the Ship, a comic book published in 1942, was one of the first Disney comics prepared for publication outside newspaper strips. However, not counting a few cereal giveaway mini-comics in 1947 and 1951, he did not have his own comics title until 1952. In 1936, Pluto was featured in the picture book Mickey Mouse and Pluto the Pup by Whitman Publishing. Pluto ran his own neighborhood in Disney's Toontown Online until its closedown. It was called the Brrrgh and it was always snowing there except during Halloween. During April Toons Week, a weekly event that was very silly, Pluto switched playgrounds with Minnie (all other characters did this as well), and he actually talked in Minnie's Melodyland. Pluto has also appeared in the television series Mickey Mouse Works (1999–2000), Disney's House of Mouse (2001–2003), Mickey Mouse Clubhouse (2006–2016), the new Mickey Mouse shorts (2013–2019), Mickey & the Roadster Racers (2017–present), The Wonderful World of Mickey Mouse (2020-present) and Mickey Mouse Funhouse