When Dr Foyle's uses one of his diabolical inventions on Gerty's chameleon, Leo finds he can make people invisible with a touch of his tongue.

Fiona has her mind set on becoming a stage actress. Which would be fine if she could only read her lines without bursting into giggles ! Dr Dog discovers she has a stomach anomaly, "a giggling gut" and there's only one way to fix it!

When the plant Gerty found at the town dump falls ill, Dr Dog comes to the rescue. But as the plant gets better, it starts growing - at amazing speed ! - and our hero realizes it's an extremely greedy carnivorous species.

When the celebrated Dr Dog is invited to present his latest inventions at a conference in a luxury hotel, the Gumboyles insist on going with him. They promise to behave - but, of course, they don't.

Tchou Bidouha, the most famous rock singer of his generation, begs Dr Dog to find a cure for the persistent hiccup which causes him to spew soap bubbles in frequent fitfuls. Dr Dog is sure a good scare will do the job. Problem is nothing scares the superstar - ever. Meanwhile, Kev and Gerty help Fiona find a cool look to seduce their hero.

As Fiona and Baby return from a stroll around the docks, their hair starts growing at top speed all of a sudden ... and turns bright pink Ma and the Gumboyle girls blame Achilles, the laboratory rat Kev has brought home. But Dr Dog soon realises they've got it all wrong and discovers the true culprit : Dr Foyle's super powerful fertiliser and its highly toxic fumes.

Grandpa suffers from all sorts of aches and pains. Dr Dog brews him a "youth elixir" which causes Grandpa to feel as lithe and fit as in his long lost youth! But as Grandpa's body grows younger, he starts behaving like a teenager.

Dr Foyle uses a cold snap to cause a string of accidents hoping patients will flock to his surgery. When Dr Dog finds out, he uses his latest invention, a miniature transmitter to persuade Foyle that his conscience is speaking to him.

As the fiendish Dr Foyle attempts to steal Dr Dog's patients, he comes up with a new "sneezing" virus which contaminates living beings along with plants and inanimate objects, causing weird purple spots' eruptions.

Vic Larsen, the famous anchorman, hits on the idea of a live interview of Dr Dog. Ratings will rocket ! But as he enters the Gumboyle home, he has an even better idea : a Gumboyle reality-show.

Foyle creates an alpha-kappa wave emitter that is supposed to regress Dr. Dog into a plain old doggie. He buries the machine in the middle of the garden but it has no effect on our hero. It works very well on any humans in the area.

Dr. Dog can't compete with Pa Gumboyle's latest acquisition: a robot dog. It puts him to shame as far as normal doggie duties go so Dr. Dog packs up and leaves. Little does he know that the Gumboyles will soon need him more than ever.

What happens when an elephant in a small traveling circus drops the ball because he has a bad case of the blues? Dr. Dog searches for a cure to restore the elephant to his normal good spirits as finding the cause will be no mean feat!

An encyclopedia topples on Dr Dog's head, causing him to lose his memory and adopt a dog-only behaviour. The children, are hard put to persuade their dear doctor to revert to his usual self.

A kindly old grandmother persuades Dr Dog to train her grandson boxer, Joe Brawnie. The kid has lots of brawn, but pretty few brains. In fact, he would be well advised to pick another sport!.

When Dr Dog is awarded a scientific prize, the Gumboyles find themselves with a huge sum on their hands. The money soon goes to their head and they move into the Royal Palace ... where they promptly wreak havoc.

When Dr Dog realises that some diseases are best cured by hypnosis, he decides to ask the advice of a famous bogus fakir and real hypnotist who performs in a circus.

Dr Dog uses a Tsetse fly to cure Gerty's insomnia but it escapes. The whole Gumboyle family comes down with a sleepwalking sickness that can't be cured while the fly is active. Nobody except our ingenious Dr Dog, can find it.

Dr Foyle tries to persuade an audience of distinguished doctors that he can bring a cat mummy back to life. Dr Dog is quick to show him up as a quack.

When a nasty cold causes Margaret Pouncefoot to lose her voice, she consults the nearest doctor - i.e. Dr Dog, who promptly concocts some throat pills to help her recover her voice.

During the Bud Feast, Miss Pickle attempts, once more, to charm Grandpa. When he gruffly rejects her advances, she unfairly accuses Kev of knocking her over with his skateboard.

A strange illness is spreading. People don't walk anymore - they leap ! Dr Dog's investigates and discovers mutant fleas, boosted by an extra powerful washing powder. Dr Dog sets about finding a way to get rid of the pesky bugs.

Pa's acting very strangely. At night he turns into a hairy, ravenous beast and sleeps all day in the dark. Dr Dog discovers that Pa's changed into a "rodent-vampire" by the Transylvanian hamster Junior bought on the Internet.

When Kev and Dr Dog set up a television channel, the fiendish Dr Foyle uses it to hypnotise viewers. Townsfolk are convinced they are sheep and rush into the first "sheep specialist" surgery in sight - Dr Foyle's !

Dr Dog mistakenly eats a tin of cat food, little does he know that the tin, marketed by an unscrupulous businessman, is not what it seem. When Miss Pickles eats some too, they both start behaving like cats !

Grandpa isn't getting any younger and when his back is out, Dr Dog tells him there's nothing he can do. Grandpa will have to wait until it's better. But Grandpa proves a difficult patient so Dog cobbles together a "flying armchair".

Kev slips inside Dr Dog's "microbe enlarging" machine not noticing it is set in acarid mode. He finds himself keeping company with a giant acarid - ten thousand times its standard size and deeply attached to Kev.

Jack, a famous puppeteer and Mack, his puppet, are upset when Vic Larsen, the television executive, decides to replace their act with a teleshopping show. Dr Dog helps get their jobs back, much to the delight of all and sundry.

When Pa buys a batch of old computers, the whole family is infected with a "computer virus". An anxious Dr Dog sabotages the computers. Bad idea. Pa brings home a robot who easily repairs the machines !

Strange things are happening in the Gumboyle household. A mysterious force moves Dr Dog's cushion from the hall to the kitchen - without waking him ! Gerty thinks ghosts are at work, but Dr Dog favours a more scientific explanation.

Gerty comes upon a strange "star dust", from a passing comet and turns into Super Gerty. These new super powers wreak havoc so Dr Dog tries various ways to rid Gerty of the magnetic powder ...

The Gumboyles are having dreadful nightmares. Night after night, kindly Dr Dog changes into the Abominable Dr Dog. He invents a special helmet to help but the Gumboyles stop dreaming ... and sleeping !

The Gumboyle family are the victims of a scientific experiment gone awry. A hideous cactus stings them, bringing a streak of bad luck. With Ma's help, Dr Dog performs a transplant to turn the plant's poison into a bad luck vaccine.

The Gumboyles are given a shaking bagpipe - home to a genuine Scottish ghost - A very polite character, set on helping the people who have set him free. But far from helping the Gumboyles, the ghost makes a huge nuisance of himself.

Pa mistakes one of Gerty's toys for a Vitamin C capsule and suddenly changes in the most amazing manner. Pa, who is always late, suddenly turns into a punctuality maniac. An X-Ray reveals that the capsule contains a wrist watch!

Dr Dog invents a small electronic hammer which excites specific brain areas, with the aim of giving Kev a " head for maths " … and it works… amazingly well …

A strange epidemic breaks out in the Gumboyle household, as they each turn a different colour. Baby, mimosa yellow, Ma banana yellow, Gerty cactus green, Kev shark blue, and Fiona ebony black. But there's worse to come.

When a long spell of bad weather brings about a spate of doldrums in the Gumboyle household, Dog hits on the idea of treating his lotus flowers with a special ray.

The Gumboyle children hit on the idea of playing a practical joke on their neighbours -broadcast a sensational scoop on Gumboyle TV (their miniature pirate television channel) - a fake encounter with the very first ETs seen on earth.

Leo the chameleon is sick so Dr Dog invents a special type of syrup to enable him to say what's wrong. But when Gerty feeds it to her frogs, who start complaining, Dog tips it out on a patch of carrots… Bad idea!

Dr Dog's latest invention produces holograms. Ma tests it out, but later, a bolt of lightening strikes the machine and releases a strict and tidy conscious Ma hologram. - thus sending waves of panic through the neighbourhood.

Dr Dog concocts a lotion to make muscles more supple, flexible and rubber-like. Kev decides to use it to help Fiona (who dreams of becoming a model) grow taller. But he uses far too much and Fiona turns all rubbery!

Celebrated astronomer, Paco Paco, has discovered that an enormous asteroid is about to collide with Earth. But the absent-minded astronomer has misplaced his notes. Luckily, Dr Dog latest invention visualizes recent memories.

Dr. Dog is asked to make a guest appearance on "The Expert Speaks" but ends up in the wrong studio, where an episode of "The World's Cleverest Pets" is being recorded.

When Baby Gumboyle is accidentally kidnapped by a couple of bank-robbers, Dr. Dog is called upon to rescue him.

Dr Dog invents a special cap to help the mayor overcome his shyness and deliver a very important speech. The mayor's delivery is flawless but Dr Foyle seizes the opportunity to attempt to discredit his rival, once more.

Dr Foyle's latest fiendish scheme is to turn the neighbours into statues. His aim is to fill his waitingroom with statues, then, more importantly, use an antidote to stamp out this mysterious epidemic. A shortcut to glory and fame.

A supposedly dumb parrot tells Dr Dog his magician friend is a kleptomaniac. Our hero sets about curing Alonzo Alonzini, the kleptomaniac magician, with a pair of "super hands" which can do just about everything!

Dr Dog, hoping to extend his medical knowledge, invites a distinguished Sioux medicine man, to visit. Dr Dog soon realizes the man is a quack, suffering from a mild form of "Wild West craze"!