Moss is a gray mouse who attends school and plays soccer with Tutter on Bear in the Big Blue House. Moss is introduced in the show's fourth season. Physically, he resembles Tutter, except his fur is gray and his eyes are closer together. When Tutter starts attending Mouse School, he decides that he wants to be Moss's friend in the episode "Tutter Gathers Some Moss," but he isn't sure how to go about doing it. He tries doing and saying things to impress him, but they don't really work. He and the other kids of the Big Blue House sing a song titled "With a Friend Like Moss" about how great it would be if Tutter were Moss's friend.
Welcome to the Blue House • Goodbye Song • What's That Smell? • The Bear Cha-Cha-Cha • Dear Grandma • Happy, Happy Birthday • Good Morning • Brush Brush Bree • Look at You Now • That's My Name • Everybody Say Ah • Great to Be at Home • Go to Bed, Sleepy Head • Take Time to Smell the Cheese • Clean Up the House • Oops! I Goofed Again • Quiet Time • Otter Love • Shape of a Bear • Baby, Baby • When You Make Yourself a Friend • Oh, Boy • You Go, Ojo • Need a Little Help Today • What's in the Mail Today? • Making Sense of the World • The Grandma Mambo • Remember When • The Otter Dancing School • Shadow's Lullaby • When I'm Older • Everybody in the Tub • Rhythm in the Air • Why Can't the Dirt Just Leave Me Alone? • Imagine That • Smellorama • When I Find the Great Lost Cheese • Under Your Blanket • Love is Incredible • Your Grandma and Grandpa • What Kind of Mouse Am I? • Picture This • Hello Doctor • Worth the Wait • Friends Forever • Surprise! • What's Mine is Yours • The Toileteers • Next Stop, Dreamland