Maybe a golden retriever mixed with smth?
He looks like a poorly drawn Shiba Inu or a Korean Jindo. If he were a golden retriever he’d be fluffy all around, not just the tail. (I don’t suggest he’s a Pomeranian cause they mention him being a big breed.)
His tail doesn’t really look like it’s supposed to be a Shiba Inu or Jindo type tail. More like a poodle texture but his ears don’t match with poodle. I’ll just settle with some backyard bred doodle
Their grown tails can look that fluffy and squirrel like, more so with Shibas. I also wouldn’t put it past the artist just not knowing how puppy anatomy works and trying to miniaturize adult traits thinking it would fit. Plus big poodles aren’t very popular over there, the mini ones are and he’s stated to not be a small breed.
I’m going entirely based off looks here, which as I’ve stated, his tail is not the same texture nor shape as a Shiba Inu or Jindo. Doodle is the only thing closest in appearance that I could find
I need author to look at some dogs rq cause I’m still trying to figure out what breeds they are especially samsam. I assumed his boss is a doberman but his ears are weird and his tail doesn’t have the right colour (doberman tails don’t have a white tip). And samsam is just, a squirrel dog or smth