From the OED:
OE. gós (pl. gés)
Narragansett moos (= Abenaki mus, Penobscot muns)
Moose is not a native English, or even (Indo)European word.
https://en.wikipedia.org/wiki/Great_Vowel_Shift
OE. mús fem. (pl. mýs)
The word for mouse used to sound like modern "moose", before
u → ɑʊ.
Same with the word for house: OE. hús
So why don't "mouse" and "house" have the same plural?
Well, in the case of the
modern computer peripheral they can.
But actually in Old English the plurals of the two words were different to start, as you see above.
For "mice" it seems to
go back to Proto-Germanic:
Then what about house? As you see above, in Old English the singular and plural were identical. It's just that over time people added on the generic "-(e/a)s" English plural to help differentiate.
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