Saru

Saru is the pet dog of two of the World Nobles, Saint Roswald and Saint Shalulia.

Appearance
This dog, like all other Nobles, wears a helmet to "protect" him from the outside air. He has the appearance and color of the toy dog breed pug. However, his legs and body are longer than normal and his tail does not curl.

Sabaody Archipelago Arc
When first introduced in Sabaody Archipelago, Saru came alongside its owners, and urinated on Dias, a slave of his owner who tried to escape but was brutally injured by the Bomb Collar. Shalulia sarcastically reprimanded Saru's vulgarity on Dias.

Trivia

 * His name Saru (猿) means "monkey".