Dogs go through a 'stroppy teenage phase'

Daily Mail - Science & tech 

We all know how difficult, distracted and stroppy some teenagers can be. Now, new research has shown that dogs go through a similar'teenage' growing-up phase when they hit 8 months. The discovery comes after owners of hundreds of dogs that were tracked as they grew up reported'adolescent' behaviour at eight months. Teenagers can be difficult, distracted and stroppy. The research was aimed at spotting those that would be suitable for training as guide dogs.