4th Grade Male Dog

4th Grade Male Dog is an unnamed character in the series. He often appears in various places at various times and is also seen with the Tough Customers. He is also part of the group of bullies. He's had only two speaking roles so far in the series, which happened in the episodes, Arthur Goes to Camp and Arthur's Big Hit. Arthur Goes to Camp and Arthur's Big Hit were his most significant roles in the show, though he played a bigger role in Arthur's Big Hit. In the episode he and the other members of the Tough Customers motivated Binky to hit Arthur, which worked needless to say.

How he came to know Binky is a completely mystery since in the episode, Arthur Goes to Camp he was completely against Binky and never hung out with him until the episode Arthur Writes a Story. As for his personality he is mostly a bully and his family has never been shown in the series.

Appearance
4th Grade Male Dog is a dog with a brown complexion. He wears dark gray jeans, an orange shirt, and has a dog collar armband on his wrist. He wears blue and white colored high tops. In the episode Arthur Goes to Camp he wore the same clothes except he had a black Camp Horsewater shirt with a red "H" on it. In the same episode he wore white armbands on both of his wrists instead of the black ones he has been seen wearing throughout the show.

Trivia

 * With the exception of Artur Goes to Camp this character made occasional appearances in the earlier episodes and seasons. In the episode Arthur's Big Hit he had another speaking role. After Season 4 his appearances in the show started dwindling. Then after Season 13 he disappeared. His last known appearance so far was the episode, The Pride of Lakewood. He was never seen in any episodes from either Seasons 14 or 15.
 * This character just like the rest of the Tough Customers is also afraid of Binky.
 * He's good at catching frogs.