MacFish
Super Boxer
The only time Vegas barks is when something won't play with him. It might be us, a cat, a dog, a new toy he hasn't quite figured out yet. He has just now (9 Months) started to bark to "protect" our property. Usually he is protecting us for a plastic bag blowing by or something like that :D
This trait was one thing I read while doing research on the breed before we got Cassius. They're not your typical "yappy dog."