This weekend Petco was having major ferret sale, so I brought home a tiny baby boy - He is LITTLE. About 6 weeks old. As he's by far the youngest one I've dealt with, I have a couple behaviour questions - 

1) He's a nipper. Is this a phase like puppies go through, where it's almost like teething?

2) He's a little... whiny... I think that's the best word I can come up with. It's not dooking. It's sort of like a groan or a whimper. I'm taking a guess and thinking he's looking for his previous cagemates from the pet store. Is that a pretty accurate guess? It's not high pitched, it's sort of like a low groaning noise. Not one I've heard before. 

He's eating well, poop seems normal, and he's romping around with the two larger ones (he's a feisty little snot, going after Mishka who is easily twice his size) so I'm not concerned really about his health. It's really the second question about his whimpering that I'm more curious about.

Thanks!!