背景是原始時代，講的是原始人小剛和父母在野外生活，在一個偶然和大猩猩成為朋友，劇情里也一起經歷各種磨難。
Key Animation (ep 4, 8, 12, 21, 23, 32)
Music
Episode Director (eps 4B, 9B, 14B, 21B, 23A, 28B, 32B)
Key Animation (eps 9, 13, 19-20, 25, 27, 31)
Key Animation
Key Animation (ep 1, 3, 7, 12, 16, 18, 24, 28, 33 )
Key Animation (eps 2, 24)
Key Animation
Episode Director
Art Director
Key Animation
Episode Director (eps 53, 55, 62, 72)
Key Animation
Recording
In-Between Animation (ep 1, 4, 8, 10, 16-17, 22, 30, 34, 37-41, 43-50, 5)
Episode Director (ep 1, 4, 6, 8, 10, 15-16, 18, 22, 24, 26, 29, 31, )
Key Animation (eps 47, 51, 55, 57, 63, 66, 71)
Original Creator, Theme Song Lyrics
Character Design, Key Animation
Key Animation
Key Animation
Key Animation
1974年 季度排名 #1
1974年 動畫總排名 #31