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Biographical information
Age (1955)"Middle aged" (for a dog)
Physical description
Behind-the-scenes information
Played byFoster (Part III)

Copernicus was Emmett Brown's dog in 1955 named for famed scientist Nicholas Copernicus. Sometime between then and 1985, most likely by 1970, Copernicus passed away and was replaced by Doc's new companion Einstein, continuing with the theme of pets named after famous scientists.

Copernicus, like Einstein later, was usually Doc's guinea pig in his experiments. He had been with Doc on the night of November 5, 1955 when Doc began testing his brain-wave analyzer on him.

Copernicus grieved for his master when he found Doc's tombstone in Boot Hill Cemetery the night that Doc and Marty McFly found the DeLorean time machine in the Delgado Mine.

Copernicus appears to be either a mixed-breed or a breed of terrier.

While Copernicus was never referred to by name on-screen in Part I, his name was mentioned in the novelization. It wasn't until Part III that his name was actually spoken and confirmed as being Copernicus.

Behind the scenes

  • As with Einstein in Part III, Copernicus was portrayed by a different dog than the one which was used in Part I.
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