Summary: Holly, who paints her dogs' nails, and Mikki, who is bite training his dog for protection, leave their dogs behind and travel to South Africa to spend a week with dogs that are trained to track down rhino poachers. Rhinos are endangered and one is killed by illegal hunters every day. Finding the poachers is vital, but will the Brits cope with tough new responsibilities, and will the experience help them re-evaluate their own lives and become better pet owners?

Summary: Mishak from Wembley, who doesn't believe his Staffie cross dogs should be on a lead and breeds them for money, and glamour model Amy, who doesn't believe in training her pet Jack Russell and never got over the death of her previous pet, leave their dogs behind and travel to Melbourne, Australia to spend a week in one of the biggest lost dogs' homes in the world. Mishak and Amy are responsible for training unruly dogs, helping to find them a home. When confronted by what happens when people breed dogs irresponsibly and don't look after them, will the experience help them re-evaluate their own lives and become better pet owners?

Summary: Essex hairdresser Ed, who treats his two little pugs like royalty and feeds them the finest human food, and single mum Bexy, who is trapped in her house looking after her unruly labrador, leave their dogs behind and travel to Canada to spend a week working with special ops and learn to work with army dogs. They learn to abseil off tall buildings with their dogs attached and take their dogs stealthily through water obstacles. The army training pushes them to the limit, with Bexy leaving the programme to be replaced by stroppy teacher Georgia. Will the experience help them re-evaluate their own lives and become better pet owners?

Summary: Streetsweeper Kim has no control over her two dogs, including one left to her when her dad died, while oil worker Mark has a husky that loves to chew everything, which is causing a massive rift with his girlfriend. Kim and Mark leave their dogs behind and travel to the Australian outback to spend a week working with sheep dogs. They learn to muster sheep and cattle across the vast landscape and take on a real, paid for job that pushes them to the limit. Will the experience help them re-evaluate their own lives and become better pet owners?

Summary: Account manager Ronnie has no control over his little pug, who is causing a rift between him and his girlfriend which is preventing them from having children. Beauty therapist Holly's dog defecates all over her mum's house and has caused big arguments between the two. Ronnie and Holly leave their dogs behind and travel to Hollywood to spend a week working with acting dogs. They attempt to learn dog training from some of the best in the business, who have trained dogs for movies like Cowboys and Indians, and also work on the set of popular TV drama NCIS. Will the experience help them re-evaluate their own lives and become better pet owners?

Summary: Hairdresser Amy, who lacks confidence when it comes to controlling her basset hound, and student dropout Tyler, who refuses to take responsibility for walking, feeding and cleaning up after his dog, leave their dogs behind and travel to Alaska to spend a week working with dogs that race sleds for a living. The Brits can barely look after their own dogs, but have to look after more than 80 dogs, making sure they are fed and kept clean. They train to enter a real race across the frozen Yukon - an event that will push them to the limit. Will the experience help them re-evaluate their own lives and become better pet owners?