Miniture Pincher... what do you know about them?

I just got a 12 week old min pin 2 days ago. I would love to know any information and/or tips anyone has for this breed. He is a tiny boy and been docked and due clawed. I think we are gonna have his ears docked too not sure yet. But he is just soooo cute I have included his picture to show you my new baby! His name is bruiser, my hubby wanted a tough name!