I brought my baby home on Friday. I think she just figured out that she can growl and bark in stead of constant yapping. It was sooo cute. I just sat in the other room laughing at her growling. She is only 15 weeks old, so it was pretty cute. I also gave her an ice cube which she tried to carry around in her mouth like a bone. She would drop it on the kitchen floor and slide around trying to pick it up again.