Arthur, Perky the Elephant, and Mrs. Wood with the elephant puppies
|Family||Perky (mother; imagination only)|
|Book debut||Arthur Writes a Story|
|Cartoon debut||"Arthur Writes a Story"|
On the Moon, Arthur told Mrs. Wood that Perky had puppies. Perky and the puppies were floating because of the lower gravity of the moon, but as Brain explained, they would be lighter, but would not float up to the ceiling.