Hello guys, this is my first post here!
Anyway, I have a problem with my sugar glider's tail. On the end of his tail he have shorter hair it also looks like he got a dreadlock, the rest looks good like it should be looking. He wasn't injured before, he let me touch his tail with no problem.

Any advice? It's nothing wrong with it?

sounds like he might be over grooming it.
does he have a cagemate?
does he have a big cage, room to more around, a GOOD! glider wheel to run on?
do you give him toys to play with, youtube has videos for toys.
do you have some mini cups hanging around cage with a few treats in them so
he can go around and find the treats. I dont put a treat in every cup, you can
make plastic easter eggs with a treat inside, I had to cut a small opening so they
could pull them apart.

and of course a visit to a vet is always a good idea if you see a problem.

@BYK_Chainsaw
He have cagemate, they don't fight with each other. They have a lot of toys, big cage and wheel. His cagemate have normal tail, that's why I'm worried. ):