Good morning fellow yorkie lovers.

My Nikko is 6 months old and he is in the process of losing his baby teeth. Yesterday while playing with him I noticed that he is growing in his adult bottom canine teeth. The problem is that he hasn't lost the baby ones yet. Basically, it looks like he has double canines on the bottom. Is this normal? I checked the baby canines and they aren't loose yet. Should I be concerned about this?