[Crowley snorts at that, because like — he kind of gets it, that's the problem with angels.]

Yeah, well, he doesn't like you, is the thing. He's like one of those — what are they called? Those big white dogs that guard flocks of sheep and'll absolutely fuck up a fox or wolf if it starts something?

[Maremma sheepdogs are what he's thinking of, and he yes, he knows in the metaphor here it means he's the flock that Aziraphale is getting protective over. It is what it is.]