Dog

A dog was an animal native to the planet Earth.

On Earth
The dismemberment and bleeding of dogs was fundamental to the beliefs of Isaac Greatorex's cult. (HOMEVID: The Devil of Winterborne)

The Bandogge was a type of mongrel dog. (TV: The Shakespeare Code)

As a child, Polly had a Golden Retriever named Belle. (AUDIO: Lost and Found)

Mrs Cartwright's dog was a Collie. (PROSE: The Stone House)

The Cybus Cybermen converted dogs into two types of Cybernetic servants, Cyberdogs and Cybershades. (COMIC: Enemy Mine; TV: The Next Doctor) The Cyber Legion Cybermen converted dogs in 19th century into Cyber Wolves. (PROSE: Plague of the Cybermen)

On 17 October in 1814, a dog could be seen running from the London Beer Flood. (COMIC: The Doctor and the Nurse)

The dog Teazel, who belonged to Edward Lunn, was captured by Zygons in the Lake District in September 1909. The warlord Brelarn used his body-print to assume Teazel's form, as dogs could go where they liked. He was therefore able to spy on the Tenth Doctor, Martha Jones, and others. The real Teazel was eventually rescued from the Zygon ship. (PROSE: Sting of the Zygons)

At least one dog travelled in the Doctor's TARDIS: Butch, the pet bulldog of Amy and Tony Barker in 1966. (PROSE: The Monsters from Earth)

A dog was left behind when London was evacuated due to the appearance of dinosaurs. (TV: Invasion of the Dinosaurs)

Upon realising that the Doctor had not dropped her off home in the right place, Sarah Jane Smith playfully told a nearby dog the fact, saying that "the Doctor blew it!" (TV: The Hand of Fear)

In 1977, Adam Colby owned a dog named Leakey. Leakey discovered the body of a hiker while Colby was walking him one day. (TV: Image of the Fendahl)

A robot went berserk and started attacking a city after its creator banished a dog from his laboratory. The robot was placated when the Third Doctor reunited the dog with it. (COMIC: Doctor Who and the Robot)

A guard dog was the victim of the Master's TCE. (TV: The Mark of the Rani)

Dogs were used in police searches to sniff out missing people. Gordon Galloway used police dogs in his search of Swallow Woods. (PROSE: The Way Through the Woods)

Dogs were integral to shepherding. In fact, Peri Brown once noticed a herd of sheep running down a dog on the island of Dorsill, which made her think that something was amiss on the island. (PROSE: Grave Matter)

Whittaker owned a dog called Monty, upon whom he doted. They were both killed by Christian Purcell, who was possessed by Isaac Greatorex. (HOMEVID: The Devil of Winterborne)

Sebastian Vaughan had a dog that he named Blücher. After Sebastian's body was possessed by a cortex leech, he killed Blücher. (AUDIO: The Vigil)

On Pete's World in 2007, Rose was a small female dog that belonged to Jackie and Pete Tyler. Rose Tyler was annoyed to discover this was her counterpart in that version of the universe. (TV: Rise of the Cybermen)

After she was sent through the Cardiff Rift more than 50 years from 1953, Emma-Louise Cowell was upset that she would never see her dog again. (TV: Out of Time)

Wild dogs roamed some places on Earth. They were found on the deserts of Iraq in 1930 (COMIC: A Wing and a Prayer) and on the streets of London during the Year That Never Was. (TV: Last of the Time Lords)

Prisoner Zero took the form of Barney Collins while the real Barney was in a coma. Barney was dreaming about walking his Rottweiler, so Prisoner Zero's "Barney" form had his dog on a leash. As Prisoner Zero was prone to losing track of which of its stolen form's mouths to use, the "dog's" growling and barking came from "Barney's" mouth. (TV: The Eleventh Hour)

In 2011, Jim Purcell owned a dog named Bernard, who watched as his owner was absorbed by the carpet into the doll's house. (TV: Night Terrors)

The Eleventh Doctor played with a toy robot dog named Yappy while briefly working as a sales assistant in Sanderson & Grainger in Colchester in 2011. (TV: Closing Time)

In the summer of 2015, a dog was seen running from the devastation caused by the Windermere incident. (COMIC: The Hyperion Empire)

During the 22nd century Dalek invasion, packs of dogs were mentioned as roaming the woods and were said to hunt travellers. (TV: The Dalek Invasion of Earth)

Robotic Dogs, also known as Robodogs, were a hazard during the Dalek invasion of Earth in the year 2254, menacing the Seventh Doctor and Ace. (GAME: Dalek Attack)

Elsewhere
Dogs appeared on the planet Mechanus in the 27th century, where they were prey to the Fungoids. (COMIC: The World That Waits)

A dog was heard barking on Vulcan. (TV: The Power of the Daleks)

On Gemino, the First Doctor, John and Gillian discovered a dog in the ruins of Gemino City. They followed it back to its master, one of the survivors of the war between Gemino and Gemina. (COMIC: The Secret of Gemino)

The form of the robot K9 was based on that of a dog. (TV: The Invisible Enemy) Professor Frederick Marius had a German Shepherd dog called Kelso. He could not take Kelso to his new work place, so he built K9 Mark I, a robot dog that was able to leave Earth along with Marius. (PROSE: One Man and His Dog)

A unique breed of dog existed on Trenzalore that was seven feet long and five feet tall, with double thick coats that enabled them to withstand anything from the planet's typical frigid temperatures to its worst winters. (PROSE: Strangers in the Outland)

Dogs were known on Iceworld. (TV: Dragonfire)

The planet Barcelona reportedly had dogs with no noses, as stated by the Ninth Doctor shortly before he underwent regeneration. (TV: The Parting of the Ways)

Behind the scenes

 * During the filming of The Ribos Operation, Tom Baker was bitten by Paul Seed's Jack Russell terrier when he tried to have it perform a trick Seed himself had done. This left Baker with a deep cut to his upper lip. As a result, publicity stills for The Ribos Operation saw him wearing a sticking plaster on his face, and for the remainder of filming Tom Baker required a heavy and uncomfortable makeup application to cover the wound. To lessen the necessary makeup coverage and explain the healing wound on-screen, a scene was added to the beginning of the following story (The Pirate Planet) wherein the Doctor strikes his lip on the TARDIS console. The scar remained visible for much of Season 16. (DCOM: The Pirate Planet)