Maryann

Maryann is a preschooler who made her first appearance in the episode "." She attends school at the Elwood Community Preschool and enjoys Mary Moo Cow.

In "D.W.'s Very Bad Mood," she is invited to Lisa's party.

She screamed when Timmy snatched an apple juice box from her.

Physical appearance
Maryann is a dog with a cream complexion, which was changed to gray for the 20th season. She has short hair and wears a purple dress, a light lavender vest over her dress, and brown Mary Jane shoes.

Appearances

 * Season 1
 * "" 10301
 * "Arthur's Lost Dog" 11202
 * "So Long, Spanky" 11301
 * "" 11602
 * Season 2
 * "D.W. All Fired Up" 20201
 * "D.W. Goes to Washington" 21001
 * "D.W.'s Deer Friend" 21101
 * "D.W. Blows the Whistle" 21602
 * "D.W.'s Very Bad Mood" 21802
 * "Sue Ellen's Little Sister" 22002
 * Season 3
 * "D.W. All Fired Up" 30201
 * "The Chips are Down" 30501
 * "Attack of the Turbo Tibbles" 31001
 * "D.W. Tricks the Tooth Fairy" 31002
 * "Double Tibble Trouble" 31101
 * "Arthur's Almost Live Not Real Music Festival" 31102
 * "Arthur's Dummy Disaster" 31301
 * "D.W.'s Perfect Wish" 31402
 * "The Long, Dull Winter" 31502
 * Season 4
 * "D.W.'s Library Card" 40101
 * "Muffy's New Best Friend" 40202
 * "Prove It" 40402
 * "Binky Barnes, Wingman" 40701
 * Season 5
 * "The Last of Mary Moo Cow" 50801
 * Season 6
 * "The Boy Who Cried Comet" 60501
 * Season 7
 * "Cast Away" 70101
 * Season 8
 * "Sue Ellen Chickens Out" 80502
 * "Kiss and Tell" 80902
 * "Bleep" 81002
 * Season 9
 * "Emily Swallows a Horse" 90802
 * Season 10
 * "The Secret About Secrets" 100302
 * "D.W. Aims High" 100501
 * "D.W., Bossy Boots" 100702
 * "Operation: D.W.!" 100802
 * Season 11
 * "Mind Your Manners" 110202
 * "Buenas Noches, Vicita" 110301
 * "D.W. On Ice" 110901
 * Season 12
 * "Never, Never, Never" 120102
 * Season 14
 * "D.W. Unties the Knot" 140202
 * "In My Africa" 140902
 * Season 15
 * "The Last King of Lambland" 150302
 * Season 16
 * "All About D.W." 160301
 * "The Last Tough Customer" 160601
 * Season 19
 * "Little Miss Meanie" 190802
 * Season 20
 * "Buster's Second Chance" 200101
 * "Bunny Trouble" 200302
 * "That's MY Grandma!" 200402
 * "The Hallway Minotaur" 200701
 * Season 21
 * "The Princess Problem"
 * Websites
 * Arthur's Guide to Children's Hospital Boston

Trivia

 * During Career Day in "D.W. Aims High," she can be seen wearing a safari hat, which suggests that she may want to become an explorer when she grows up.
 * Maryann was shown with Fern in the episode "Sue Ellen's Little Sister" as Fern's little sister. Fern, from what we've seen and known, is most likely an only child. Plus, Maryann's father is very different compared to Mr. Walters.