Scariest Dogs | Dogs Behaving Very Badly

From a Jack Russell who doesn't let anyone into the room, to a Rottweiler who won't stop biting, we take a look at some of the scariest dogs.
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Britain is a nation of dog lovers, but what happens when domestic bliss turns to chaos? Luckily, there's someone you can call. Master dog trainer, Graeme Hall is on a mission to restore harmony across the country. He has built his reputation on finding quick but long-lasting fixes to almost any unwanted dog behaviour, helping to train over 5000 canines (and 1 fox!) and their owners. His mantra is clear: "Any Dog, Any Age, Any Problem."