Happy is only 4 month old and she's a fast learner. I taught her how to lie down and roll over. She does it so well now. The first trick was sit as well. she bites everything so we decided it to put her in the crate when everyone is sleeping. I found out that she's been walking into the kitchen and biting the kitchen cabinet among with other things. Other than the biting, she's doing a great job on potty training and learning new tricks. She now can go downstairs without being so scared. I love happy so much.