I don't know whether I am resubmitting this message, or whether I inadvertently deleted my first attempt.

Anyway, I have been singin "the Monkey Song" (as we called it)at parties and in performance (e.g. at retirement homes) for about 60 years. I learned it as a child from my uncle, and in all those years only met one person (until today) who had heard it before (She was from Buffalo, NY).

The melody I learned is quite different from those posted and simpler. In the key of C it would go as follows: On the shady limb of a rubber tree (ggeeeggaaa) ten thousand miles away (abbagc) On the banks of the HULA River, in far off Uraguay (repeat above melody) There ists a nervous monkey, His eyes with tears agleam (geeeg(aa accdd#e)"and his tail dangling gently within the limpid stream" (eeefeda abbedc) That's pretty much it -- same tune for the Chorus "Oh Shades of Izaac Walton...

Anyway, glad to know after all these years I'm not the only hippopotamus in the zoo!