Snoopy slept on top of his doghouse, rather than inside it, for the first time. Thereafter, Snoopy was seldom seen to venture inside the doghouse, instead spending the bulk of his time sitting or lying on its pitched roof.
Despite Snoopy's tendency to stay outside in all weather (in some cases even allowing snow to accumulate on his prone body), a running gag establishes that the interior of Snoopy's doghouse was something extraordinary. It defied physics, being dramatically larger on the inside than the outside, with a carpeted foyer, a den, a library, a guest room, a stairway and a basement. The first indication of the doghouse's unique layout occurred on January 31, 1954 when Charlie Brown was puzzled to see all his neighbourhood friends crawling into it for a visit. The doghouse was destroyed several times over the years, being hit by a tree due to a chase over Linus' blanket (July 26, 1959), crushed by a large icicle (February 13, 1960), and finally burned to the ground (September 19, 1966). In each case the doghouse was soon rebuilt. Although individual items were lost in the fire, each replacement doghouse appears to have retained the spaciousness and opulence of its predecessor.
The interior was decorated with several pricey acquisitions including a painting by Van Gogh, first mentioned on February 29, 1964. After the fire destroyed the Van Gogh, it was replaced by an Andrew Wyeth. At various times the interior of Snoopy's doghouse also held bunk beds, a pool table, a ping pong table, a television, a mural (painted by Linus), a shower, a grandfather clock, and a jacuzzi.[2]
Features established in the television specials include a fine kitchen (A Charlie Brown Thanksgiving), and sound equipment (A Boy Named Charlie Brown). In It's Magic, Charlie Brown, Snoopy enters his dog house and the underground interior is depicted as spacious and well equipped for anything he needs.