As a joke when Maximus was 3 months old (he's 8mths now) my husband bought a "Security Dog" sign. I completely forgot that he actually did hang it on the fence. Well, yesterday I was in the backyard, in the pool with Max and my 3 year old nephew waiting for the air conditioning guy (ugh! we haven't had air this whole week during the heat). I had left a note on the front door telling the guy to come around back because I never would have heard him knocking. When he did get there he knocked on the fence and then yelled he was there. Knowing like many other boxers Max just wanted attention from him I told him to come in. He's like are you sure?, is there a dog?, I don't want to get bit. I'm like yeah there's a dog, but don't worry about him he's only a puppy. So needless to say he came in, he loved Max so much he played with him longer then it took him to fix the AC. All day I couldn't figure out why he was so cautious about coming into the yard, until later that night when my husband came home from work and I was telling him the story. He was like "Oh he probably saw the sign". Then the light bulb finally went on and I realized why the guy was so afraid to come into the yard. The sign was on the fence.