User blog comment:Kaido King of the Beasts/Chapter 806: Jacked Off the Island/@comment-10543621-20151105070935

I think the Mink's being friendly is exactly as the dog mink as said. Just because they're one race doesn't mean they all have the same opinion. I'm guessing most of the Minks having not seen many humans in their lives are suspicious and see them as outsiders/inferior beings and are hostile. Others like the dog mink as said choose to see humans as a variation Mink and see no reason to fear them or be hostile.

Probably Nami and the rest did them a huge favour, possibly related to Jack's attack. Hence the special treatment. But their original hostility is mostly because of the fact that they ARE intruders, Until they found out that they're Strawhat pirates. Of course, not all the Minks agree with that, and evidently, these guardians of the forest remain wary.

The whole things still needs a whole lot more clearing up.