Dogs from History

Balto, final lead dog of sled-dog team that delivered medicine from Anchorage to Nome, Alaska to save Nome from a diphtheria epidemic. The lead dog for most of the trip was Togo.
Belka, a dog aboard Sputnik 5.
Hachiko, a symbol of loyalty in Japan, now honored by a statue in Tokyo.
Greyfriars Bobby, a dog loyal to its master long after the master's death.
Laika, the dog aboard Sputnik 2.
Nipper, the HMV (His Master's Voice) dog.
Old Shep, after seeing the coffin of his master loaded onto a train in Fort Benton, Montana, Old Shep maintained a vigil at the station for over five years.
Pavlov's dog, who drools saliva involuntarily when hearing the sound of a bell (a signal of "dinner's ready!").
Petra, the first Blue Peter dog.
Pickles, discovered the Jules Rimet trophy (the Football World Cup) after it had been stolen in England in 1966.
Rico, a dog with a huge vocabulary.
Robot, dog who discovered the prehistoric cave paintings at Lascaux.
Strelka, a dog aboard Sputnik 5.
Shep the Border Collie, another Blue Peter dog.
Stubby the most decorated American war dog in World War II.
Togo, lead dog for most of the journey of sled-dog team that delivered medicine from Anchorage to Nome, Alaska to save Nome from a diphtheria epidemic.