It appears that we have something of a rareity. A skinny pug.
Pug are typically meaty dogs. Barrel chested and roundish. See exhibit A above. Oscar is so meaty he has nicknames like Beefy, Tubs of frosting, etc.
But Hugo is long, lean and narrow. Skinnny pug.
He actually looks like this vintage pug painting. Is he some sort of version of early pugdom?