Abby is 10 months and has just started barking and growling (at the big dog!) in the past few weeks. Ziva is a growler when she plays tug and Abby is finally learning how- it comes out like humming! They both howl to the police sirens- it is sooo funny. I think Abby would not have learned had it not been for my other two dogs (her parents were very quiet) |