friesian

Yes, but can it unscramble an scrambled text in an obscure language like basque or friesian just as well?

Supermarket milk is commonly from Friesian cows, but sometimes from Ayrshire cows (especially in Scotland) or from Jersey cows (especially in South West England).

Identical twin Friesian calves don't have the same pelt patterns.

Same linguistic borrowing, but different time period, so the horses ended up Friesian and the people (and everything related to the province and historical region) Frisians.

And if language families exist upon a continuum - there must be some point on that continuum where you are no longer speaking English, but say Scots or Friesian or Nigerian Creole instead.

If you are trying to suggest that there is some kind of purity test, it is widely recognized that what is often called Friesian is the closest thing to English as it used to be spoken.

I think it was at the Science Museum in London (worth a trip for computer historians anyway to see Babbage's Analytical Engine, built in xxxx, next to a jar containing Babbage's actual brain), where there was a collection of printouts showing spots like on a Friesian cow (the most common breed of dairy cows in England).

The calf, named Got, meaning "glass" in Valencian, was cloned from a bull named Vasito and implanted into a Friesian host mother.

Or, less bizarrely, presumably it also works if painted like a Friesian?

My wife and I are both Dutch/Friesian, but I am reasonably certain we are not related.

Not quite, 'de Vries' in Dutch translates to 'the Friesian'.