My vegas does thesame thing to me. YEsterday was funny though. Vega is an extremely quiet dog. I have never in my life had a dog so quiet. So when she barks or growls it is very very alarming. Yesterday I had sat down in front of my comp to play some video games and all of aa sudden I hear barking so I get up immediately thinking that something is wrong and She is barking at her tennis ball (her very first one she stole from the dog park) It is the onlyball she will play with too. Just barking like mad so I guess she wanted to play, so we did. But that is hilarious!