[gemy]

I don't believe in early neutering and at 16wks that is way too young. I would wait until growth plates closed, (speak to your vet about when that is), but also do some research on toy breeds to find out the latest opinions on plate closures. I have heard a number of different months; remember not all lines mature at the same pace, so it would be natural to vary.

In terms of the biting, or shall I say nibbling, you can substitute a good chew toy for your finger, or just remove your hand, stop the playing, if he is on your lap or couch put him on the floor, etc.

Lots of good threads on potty training in the training section, so have a browse through there.

Enjoy your pup