An excellent game with a witty storyline. It needs work yet on some odd glitches and freezes, but it seems you are fixing them as they are found; Kudos!
Gonna post some hints without be spoilers as the game still seems to be questionable on occasion and makes one wonder if bugs are present.
1.) Mothman is tricky, but there is s tip on how to get him to not disappear written somewhere in the game. If at first you don't succeed, try try again (it took me a few tries to get the tip to work, so not sure if this is a glitch that it doesn't work on the first try).
2.) The monkey says something that should clue you in on what to do to learn his trick. It's tricky, but read closely his dialogue. It did work for me the first time I did it.
3.) I've not yet figured out the Chupacabra quest yet, but will edit this once I am sure it's not glitched.
Potential Spoilers below:
I have had 2 game freezes:
1.) Shortly after the first freeze, I received a message that Newgrounds was updating, so I am unsure what caused the freeze. It was just as I was going into the Frog party to take a picture, but could not move once I got down. If the glitch is reproducible, I'll edit this or put in another note.
2.) Just as I gave 2 drumsticks to the sasquatch, the full drum sound repeated without stopping. After 5 minutes, I reset and lost my progress. All pictures had been taken and all but 2-3 items remained to be done. Still had not done Chupa's quest, but am unsure what is needed to finish this.