If your guard dog doesn’t have a bite, then you better make sure it has a bark. But if your dog doesn’t have either, you might be in trouble – or are you? Introducing the Woofer. This T-Shirt designed for dogs comes with a built in speaker to turn your dog into a “portable” MP3 player. All you have to do is load it up with music, hit the play button and music will start blasting out of the dog’s shirt. If you’re worried about dogs being bothered by it, you can calm your fears knowing that a veterinary specialist has certified the Woofer. It won’t give you the guard dog you always wanted your dog to be, but you can probably load it up with some creepy tunes to give intruders the scare of their life. After all, who wouldn’t be scared of a dog coming towards you while the theme from Psycho is blaring from its shirt? The Woofer is available here, with prices starting from $140 depending on the size of your dog.