He really gets into blowing rasberries. It's funny because he will do it one day, just out of the blue...and then he continues to do it ALL day long. He definitely knows that it gets him lots of attention. Then, he won't really do it again for a few days. I think that he sometimes forgets that he knows how to do it. And when he remembers, he gets really into it. He is a funny little guy!
Here is a video of Hudson rolling over from back to front, which he did for the first time on January 6th. I'm not sure why he got upset after he rolled over....he usually doesn't do that.