Funny Things, Words

The kids were getting excited yesterday at seeing so many sheeps (not many sheeps in Liverpool) and it got me wondering why when the plural of cow is cows and the plural of goat is goats the plural of sheep doesn't have an "s" on the end.

And here's another thing. Sennight- meaning week (seven nights)- is a perfectly good English word but we've dropped it while retaining fortnight. There's no logic to it. I like sennight as a word. It's got heft, it's lyrical, it says what it means.  I'd like it back.