This is a vine snake, we've seen them in Tohoku Park. They are very easy to miss though as they lie motionless and look like a twig. Most of these are not my photos by the way.
Not sure what this guy is but we had one in ourr palapa, very small only about an inch and a half long.
An unknown lizard that was sunning on a log near the house.
Not my picture but wee saw three of these the last trip down. I'm normally scared about spiders, but these guys are docile and seem more like mammals.
Last one is a spider that we saw in Tohoku Park.