A raging bushfire threatens the life of a runaway boy, and of Kevin and the boy's mother who have gone to look for him. All three are trapped by the fire.
While flying in the outback, John Stevens encounters an Aboriginal with acute appendicitis and must co-operate.
Three American business executives set off on an outback photographic safari in crocodile infested swamps, but only two of them return to Stevens' home.
Stevens finds himself involved with a diamond robbery when he baby-sits a trained chimpanzee named Chico.
A group of cattlemen decide to organise a hunt for the kangaroos which they believe are the carriers of the deadly disease Anthrax, which is being spread among their cattle.
Stevens discovers that a young immigrant has smuggled a puppy into the country and, afraid that he will now lose it, the boy runs away, and innocently becomes involved in a bank robber chase.
When a farmer sprays his crops with insecticide, Stevens discovers that the powder is threatening a colony of koalas.
While returning a champion mare to its owner, Jack and Kevin come across men illegally trapping birds for smuggling overseas.
A dishonest vet tries to convince a cattle owner that his cattle are seriously ill and should be immediately removed from the property and destroyed. The vet then plans to steal and sell the herd.
A cat has been left a large sum of money in its master's will, a sum which can only be claimed by the relatives on the natural death of the animal. The late eccentric master's nephew, Willy, has some gambling debts which need urgent attention, and his attempts to liquidate the cat and claim the money do not succeed. When he tries to push it over a quarry, he himself falls down and has to be rescued; when he tries to drown it in a dam, he ends up floundering for his life; and when he abandons it in a remote forest, the cat uncannily finds its way back, just in time to stop Willy getting his clutches on the money.
A valuable thoroughbred horse escapes from its horsebox after a road accident, and Kevin goes out to search for it.
An Army plane carrying an atomic device and a deadly virus crashes in the Gattens Creek area.
Colin Greaves, a champion polo player, is thrown from his horse during a match and suffers a severe leg injury. He becomes disillusioned and loses the will to recover.
Tiggie and Kevin's efforts to care for a sick platypus are ruined by the sudden arrival of mining prospectors.
An eccentric old man who cares for a house full of stray dogs is to be evicted from his home by a new and ruthless owner.
The Stevens family goes to an island bird sanctuary so Kevin can release a bird that he has been caring for. They cross paths with a dangerous gang of counterfeiters using the island as a hideout.
While flying a seriously ill dog back to Gattens Creek, Kevin and Peter Fischer find themselves involved in an elopement and are forced to make a detour.
John Stevens investigates a case of rabies and unwittingly gets involved with a gang of smugglers.
Jack, Peter and Kevin work feverishly to save the life of a prize Australian Silkie dog trapped under tons of rock from an excavation site.
The Stevens family go to Sydney to attend a veterinary convention and become involved with an eccentric old woman who takes them on a hair-raising tour of Sydney Harbour.
Foul play is discovered the night before a big sheepdog competition in Gattens Creek. Stevens is called in and catches the culprit.
Stevens is attacked by two prison escapees, and through loss of memory is mistaken for one of the prisoners.
An eccentric pianist arrives in Australia on his yacht with his pets - exotic animals and birds collected from all over the world. While ashore, his yacht is set adrift.
Peter and Kevin become involved with an old Aboriginal and his dying camel, and Jack Johnson narrowly misses death.
When Kevin, Peter and Tiggie are transporting a lamb for special surgery, they spot an 'injured' man lying beside his car. They land, and the man hijacks their plane, leaving them stranded without water.
Peter Fischer takes the Land Rover for a day's sightseeing. Arriving at a ghost town, he is bitten by a poisonous snake, and his life is saved by a tribe of Aborigines.
When Stevens is appointed to look after an anteater from South America destined for an Australian zoo, the animal's defection to the Australian way of life causes a diplomatic controversy.
The activities of a practical joker cause a sequence of events that results in property owners suffering from the effects of a drought finding water on their land.
A child who secretly blames her father for her mother's death in a boating accident forgives him when he saves her Persian cat.
The owner of a dog kennel develops a tracking system using dogs with radios to assist in search parties.
When Kevin becomes an animal's agent, it looks as though he'll send the movie producers broke.
A valuable dog is loose in the area, carrying a deadly disease. Stevens and Fischer are faced with the task of rescuing the animal before the local farmers find it and destroy it.
Kevin assists in bringing into the open the unjust dealings of the manager of a large cattle station.
Tiggie sets out to train a wild brumby, but runs foul of a brutal stockman.
A blind man has his faith restored when he has to rescue Tiggie.
Stevens has only hours to unmask the perpetrator of a scheme to poison all the stock in the Gattens Creek area.
Stevens and Fischer have to perform a dangerous operation when a spear fisherman accidentally shoots a horse with an explosive-headed spear.
Gattens Creek is terrorised by a tiger with a passion for ice-cream.
Driving out to see Stevens, a man accidentally knocks down and injures a pedestrian. He is frightened away by the man's dog, and then begins to feel that the dog is hunting him.