Brian (4th grader)

4th Grade Male Dog is an unnamed fourth grader who made his first debuted in the episode Arthur's Eyes.

This character has never been heard speaking, although in the background of some episodes he was seen speaking to other characters. His personality is not known, but as shown in many episodes he is friendly to the other kids including the younger kids.

He is most of the time seen with Otis. The relationship between him and Otis is a mystery, though they could be close friends.

Appearance
He is a dog with a cream complexion wearing a white shirt with long sleeves, long green jeans, and blue and white sneakers.

In the episodes D.W. All Wet and D.W.'s Backpack Mishap he wore green swimming trunks. In the summer he wears a white shirt and green shorts. He also wears a green jacket for the Fall and Winter.

Trivia

 * This character's notable appearance was D.W., Bossy Boots and Dancing Fools.
 * There is a possible chance that Mary Ann and Unknown Male Dog maybe his younger siblings.
 * He is seen on the intro for the show along with Otis, 4th Grade Male Aardvark, and all the main characters.
 * This character is one of few characters with dots for eyes.