In engineering literature from Russia from the 1960s, one sometimes finds references to a ‘water goat’ in papers that are otherwise about heavy machinery. It turns out this is a twice-translated rendition of ‘hydraulic ram’.
Oh, that's where it comes from!
My dad told me something close when I was a kid, but according to him it was the early EU doing dictionary translation between English and French and getting "water sheep". I never could find it.
Through an unrelated anecdote, in my head this is now bound to the music of "smoke on the water", with a sheep impression for the guitar (bass?) — "Sheep on the water, ba baa baaah, ba ba ba baaah"
My favourite example of troubled blind translation is still "naked conductor runs under the carriage".
https://en.wikipedia.org/wiki/English_as_She_Is_Spoke
> It is widely believed that Carolino could not speak English and that an unknown French–English dictionary was used to translate the earlier Portuguese–French phrase book O novo guia da conversação em francês e português, written by José da Fonseca.
It became so popular for comedic reasons in the English-speaking world that it was reprinted many times and reviewed by Mark Twain.