Saru

Japanese name:

サルウ

Saru is the pet dog of two of the World Nobles, Saint Roswald and Saint Shalulia.
Like his owners, Saru is very arrogant and conceited, since he wears a bubble to prevent breathing the same air as everyone else. He also believes people below his social status are “trash”, as he urinated on Dias when he failed to escape slavery.

One Piece Wiki EN