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      Perhaps you've had to put up with a moody, uncooperative teenager. You may well have been one yourself. A new study suggests that dogs go through a similar phase of stubbornness and disobedience when they hit puberty at about eight months old.
      Looking at the behaviour of a total of 378 canines, researchers found that the animals were more obedient and more responsive either side of that eight-month mark – but only when it came to their owners, not to less familiar trainers.
      So not only do dogs appear to have a difficult adolescence just like we do, they also share the frustration that we often feel towards our parents or caregivers when we hit our teenage years. That has big implications for long-term canine care and sheltering.
     "This is a very important time in a dog's life," says animal behaviour researcher Lucy Asher, from Newcastle University in the UK. "This is when dogs are often rehomed because they are no longer a cute little puppy and suddenly, their owners find they are more challenging and they can no longer control them or train them."
     "But as with human teenage children, owners need to be aware that their dog is going through a phase and it will pass."