Logan's aren't very big or very dangly. They're actually a bit pathetic compared to the GSD balls I'm used to :rofl1: His butt is also not that apparent unless is tail is all the way up. But they're still obvious enough that he shouldn't be called a girl all the time, and yet...he is.
Gavroche was neutered at about a year, and he still has a floppy ball sack. It's not terribly obvious, though, as it's white with a black spot like the rest of him. His butt, however...he's terribly proud of his butt.
On a side note, Gavroche's penis is much larger than Logan's, despite Gavroche being neutered and smaller and Logan being intact and larger.