In the dog house: why are so many of Britain’s dogs behaving badly?

Sophie was too scared to go outside; Hendrix will chew anything when left alone. As the number of dogs in the UK has exploded, so has the number of unruly pooches. Gaby Hinsliff delves into the rise of behavioural challenges in the canine population of Britain and reflects on the essential measures to tackle these issues. Read by Sharon Bott.