Because I hang and dry-age all my beef as large, untrimmed, whole muscles, I often get too-dried beef as it ages. I don't reconstitute it in water; instead, I slice thin with the grain and gnaw until I can chew it. It gets softened by saliva and chewing and has a very nice flavor. At this dryness, any fat still yields some delicious grease when chewed.
I buy tiny, dried Korean whole anchovies which can be eaten dry as a snack. (They are also used to flavor broth.) I haven't enjoyed accidentally-dried larger fatty fish because I simply don't enjoy fish fat as it ages, but I'm sure that's a personal preference, not an indication of bad fish.