Aggression - Yorkie Poo

Another Q about my Yorkie-poo, Benji. He is ok outside of our house - but if anyone comes NEAR our house he goes absolutely nuts, barking, jumping etc. To the point where I cannot have anyone he doesn't know come into the house without me putting him away or leashing him. He wasn't like this when we first got him, we had workers in our house renovating our bathroom and he would just sniff them and walk away. We had the same guys come back for another project recently and he went ape-$hit. We had him neutered a few months ago and thought maybe that would take away some of the aggression but it hasn't. Any suggestions on helping this behavior? I'd like to be able to have friends and family over without worrying he's going to bite someone.

Re: Aggression - Yorkie Poo

I think you can do some training and help him a lot. I have seen some people post training tips on her in the past. You might want to do a search on the pet board and see if there are old posts. Good luck!