Beaver uses the bathroom several times to escape his brother when angry, slamming the door to express his emotions. At such times, June and Ward are called upon to order Beaver to vacate his refuge. In "Beaver's Good Deed", a scene is set in Ward and June's bathroom. A tramp takes a bath in their tub and slips away wearing one of Ward's suits and a pair of his shoes. In the "Captain Jack" episode, Wally and Beaver try to hide a baby alligator they bought by keeping it in their bathroom's toilet tank. Beaver's attitude toward girls is a thread that runs throughout the series, providing comic contrast to his brother's successful dating life and his parents' happy marriage. Beaver tells off his female classmates, telling Violet Rutherford she drinks gutter water, calling Linda Dennison a "smelly old ape" and threatening to punch Judy Hensler if she "gets mushy" on him. Though loathing girls his own age, Beaver develops crushes on schoolteachers Miss Canfield and Miss Landers, and in one episode says he's going to marry a "mother" when the time comes. Beaver disparages marriage saying, "just because you're married doesn't mean you have to like girls." In the later seasons, Beaver has matured into a teen-ager, adjusted his outlook, and dates a few girls, though his dates are rarely as successful as Wally's. In its first season on CBS (1957–58), "Leave It To Beaver" received disappointing Nielsen ratings and CBS canceled it. ABC then picked up the program, and although the series never entered the list of the top 30 television shows, its ratings were nonetheless solid enough to warrant a five-year run. By the start of the 1962–63 season, the show was reaching an impasse. The series was still popular with audiences, but Jerry Mathers wanted to retire from acting at the end of the sixth year to attend regular high school. As a result, "Leave It To Beaver" ended its network run on June 20, 1963. The series finale, "Family Scrapbook", was directed by Hugh Beaumont, written by Connelly and Mosher, and is regarded as being one of the first sitcom episodes written expressly as a series finale. Several "Leave It to Beaver" performers appeared on the CBS television series "Lassie". Hugh Beaumont had yet to snag his role as Ward Cleaver when he appeared in "The Well", one of the two pilots filmed for the series.