Jay Waverly North (born August 3, 1951).
Jay North is an American actor. His career as a child actor began in the late 1950s with roles in eight TV series, two variety shows, and three feature films. At age 7 he became a household name for his role as the well-meaning but mischievous Dennis Mitchell on the CBS situation comedy Dennis the Menace (1959-1963)
North appears as his character, "Dennis," on The Donna Reed Show in a show crossover “Donna Decorates” (Season 3, Episode 3).