I don't care what you call them, baby muskrats are weaned and usually out of the den in 30 days. They may overwinter if they are the last litter before then. Your 2 year old sibling is adult size at 200 days. They are sexually mature at 1 year. Which would mean in my book they are reproducing adults. So, there is no such thing as a 2 year old kitten, is there?
Nope, no 2 year old kittens.
(oops, I take that back. Cecil showed me the error in my ways.) But, if Cecil had a 2 year old "muskrat" that had a tail that was flattened horizontally rather than vertically, that might account for a larger than normal run and hole in the bank.
