I haven't heard it in a while, but Eddie "hoots" sometimes. It's not frequent, I haven't heard it in a few weeks. When we first brought him home, he did it a lot more frequently, but it eventually went down. My question is when do you start getting worried about a heart condition? I read on GL that hooting can be an enlarged heart that is pressing on the trachea. Do you think that this can be the case if it's not consistant at all? It has gone down loads since we first brought him home, but he does do it every once in a while. Any help is appreciated.