3 animal prints - original, hand colored

I picked these up at an estate sale recently. I was given a good size box and told that anything I can fit in the box from a room full of random stuff, I could take home for $5.00 for the whole box. I saw these and thought they were not only cool but really old so I added them to the box. They appear to be original hand colored paintings and other than aging discoloration, are in excellent condition though the frames are dirty and not nearly as old as the prints themselves. I don't know much about them so any input would be great. There is some writing on the bottom of each but I haven't researched it yet. For what I paid, I believe I got a good deal.