Ours sounds terrifying but in reality he just wants to say hello really really urgently. So my advice to any potential burglers is don't be put off, be persistent and you'll be doubly rewarded with swag and a very affectionate poodle. Well, the poodle at least.
What's the point of having a dog if they're not frothing at the mouth at the door to scare away in-laws and the like.