Expert trainers take on Britain's naughtiest dogs - and their owners. Fierce cockapoo Bear is putting a marriage under stress. Angry Chihuahua Gina has to be carried around in a bag.

Can the trainers help with a destructive Dalmatian that's causing carnage and costing its owners thousands? And is there a cure for a canine phobia of windscreen wipers?

Ken is terrified of dogs... including his own 18-month-old cockapoo, Freddie. Ken's wife Debbie is hoping the trainers can fix husband and dog, and restore harmony to the family home.

Muzzled collie Marvin's owners are at their wits' end with his lunging and nipping. Trainer Jo begins the delicate process of earning Marvin's trust. Plus: a diva-like cockapoo called Maggie.

The trainers take on newfador Ruby, an imposing eight stone of solid dog who refuses to budge on walks. And Maltese bichon Marco just won't listen.

A pint-sized pup keeps snapping at his owner Sean every time Sean tries having smoochy 'alone time' with his girlfriend Charlotte. And Wonder the blind dog needs help with anxiety.

A mile-a-minute Labrador is running rings round its owner. And a Jack Russell-cross with bad toilet habits has not only ruined his owner's home, now he's started peeing on the cat.

Unkempt toy poodle Daisy bites her owners Wendy and Dahana every time they approach her with a brush. And Yorkshire terrier Marley has a severe case of separation anxiety.