Ralph and Disco undergo an initial assessment for Hearing Dogs for Deaf People; Scruffy auditions for Stuntdogs.
A German shepherd endures a tough training to join the British Transport Police; Dinky Brush, a spaniel born with a heart condition, hopes to work for Pets as Therapy.
Gael begins her quest to be a sheepdog; an update on Ralph and Disco's training to work as hearing dogs; Tyke is assessed for a position as a customs dog.
A pup is assessed for work as a seizure-alert dog; three dogs hope to become fire search-and-rescue dogs; an update on Blake.
German shepherd Sam has his final exam with the British Transport Police; a vet's letter determines whether Dinky Brush can work for Pets as Therapy.
Tyke trains at London's Heathrow Airport in his quest to become a customs dog; updates on Ralph and Gael.