A recent widow is at her wits' end when her grieving guard dog goes into a downward spiral; a tight-knit family comes to terms with its crippling co-dependence in order to give its dog the social life it deserves.

Newlyweds face a heartbreaking decision when their rescue dog tests the strength of their marriage; Matt helps a reformed killer dog come to grips with its fear-based aggression.

Kai and Goober were once bonded brothers, but now need Matt's help to break up their life-endangering aggression; Chinese crested Frankie's co-dependent household turns him from a beautiful lover into a ferocious bully.

Snuggly pup Moneypenny has some severe bullying issues; a beautiful Australian shepherd named Whiskey strikes fear in his owners' home; Pax brings no peace to his owners, who have had to cut themselves off from the outside world.

Matt helps a previously feral blue heeler with violent reactions to strangers and a neighborhood street dog with an extreme reactivity to collars.

The Presidents, a pack of five bulldogs, face daily attacks within the home; Pax, a severely undersocialized pit mix, lands in the top 10 most aggressive dogs Matt has ever worked with.

Enhanced episodes of "Dog: Impossible" follow Matt Beisner as he uses innovative approaches to modify canine behavior and focuses on each animal's unique needs.

With a unique ability to see the world through their eyes, renowned dog behavior expert Cesar Millan rehabilitates all manner of troubled canines in this popular reality series, and often that involves Millan not only teaching dogs new tricks but also training their owners how to achieve a balanced relationship with their pets.

"Pit Bulls and Parolees" follows the work of Tia Torres, a renowned trainer of pit bull terriers and a founder of the Villalobos Rescue Center. The rehabilitation and placement center houses hundreds of abused and abandoned dogs of all breeds, and the center has a crew of paroled felons who help Torres and her daughters Tania and Mariah care for the animals. It is a chance at redemption for both man and man's best friend.

The challenges never stop for world-famous dog behaviorist Cesar Millan. In this series, not only does Cesar help dog owners with simple take-home tips for problem pooches, he and his son Andre hit the road to honor and support the nation's many heroes in the pet industry. On an RV journey that spans from Philadelphia to Los Angeles, the hosts uncover inspirational K-9 stories and connect with organizations that are rescuing and rehabilitating dogs. No pup and pet-loving person is spared as the Milans profile groups helping veterans and their service dogs, community-run animal rescue teams training K-9 police dogs, and therapy dogs that help children with autism.

Shelter dogs are given new homes and new leases on life in "Rescue Dog to Super Dog." The pooches are paired with people who struggle with mental, physical or neurological disabilities and trained to be able to help lead their new owners through their everyday lives. Dog trainers Nate Schoemer and Laura London search kennels and look for suitable strays that they can transform into helper dogs to aid humans with sleep disorders and Tourette syndrome, among many other ailments.

Professional dog trainer Victoria Stilwell visits homes with troublesome dogs and presents advice to the stressed-out residents whose canine companions have taken over their households.