Errors made by characters (possibly deliberate errors by the filmmakers): Mr. Fox says he can't say opossum in Latin because the ancient Romans had no word for it. The ancient Romans are irrelevant, as Latin has lived on as a scientific language ever since the general public stopped speaking it. Swedish Carolus Linnaeus (who Latinised his own name from Carl Von Linne') developed the Latin animal double-names in the mid-1700s, and thousands of new names have been added to that list regularly for at least 230 years. The name for opossum in this system is
Didelphis virginiana.
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