Hi! this is John the author of the song and video. I'm glad you all enjoy it! That was cool to see it pop up on this forum.
My little buddy buddy is on facebook if you want to friend him: "Castro Cotter"
He just turned two the other day. Here's a birthday video:
He looks a little freaked out in the birthday video but he hasn't ever had balloons tied to him before

So it was scaring him a little. He did fine though.
His favorite game is called "gonna getcha!" (as seen in the video). Which is basically Tag. I say, "gonna getcha" and quickly move toward him and he runs away. But he will always stop the game when I say "come".
His latest trick is "stay". It took him a while to get it since he always likes to follow me around or constantly play fetch in the house. He's sort of picky about playing fetch outside. He will go chase the toy but won't bring it back. He gets too occupied on strange smells i guess. In the house he will play fetch endlessly!
He's the best dog in the world! Havanese dogs are amazing companions.
Also, he is going to be the ring bearer for my wedding!