- "While he [Doc] studied himself [in the mirror, wearing the brain-wave analyzer], wondering whether to continue work for the day, Copernicus started barking. The dog, third in a line of pets named after famous scientists, raced from the kitchen into the living room, arriving there just as the rap [at the door] sounded."
- —From Back to the Future by George Gipe (quote, page 114)
Copernicus appeared to be either a mixed-breed or a breed of terrier, possibly a Wheaten.
Behind the scenes
- 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.
- As with Einstein in Part III, Copernicus was portrayed by a different dog than the one which was used in Part I.
- In the novelization (see Quote above), Copernicus is identified as being the third in a line of Doc's theme of pets named after famous scientists — implying that Doc had two other dogs (the names of which remain unknown) before Copernicus.
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