This may be one of Misha's craziest behaviors. I swear, I did not teach her this! :D My family gets together for birthdays about once a month. At every party, we bring out the birthday cake and sing "Happy Birthday to You". Misha was about 9 months old the first time she joined in. It almost sounded as if she was in pain. I couldn't figure out if she was singing with us or was in agony at our awful singing. Since then she has sung with us at almost every single party. Sometimes she just makes several yips and barks throughout the song. Other times, she is quite loud. She is so loud that you can't hear us! The other day it was my niece's 16th birthday. My Mom and I phoned her to sing to her. Misha could hear us and she joined in. On the last notes, Misha added her own flourish. She gave five very long howls. She rarely howls. We were laughing so hard that my niece must have thought we were crazy. LOL So, does your dog sing? Any song set him/her off? So far, Happy Birthday seems to be the only one to get Misha going. I guess it's her favorite!