I just got this story from Jeff in Hawaii, Oahu.
When I was 18 years old I lived and worked at a banana farm up in the mountain ridge of Waimanalo, whenever we moved deeper into the forest we felt like we were at the mercy of the Menehunes, which in Hawaiian mythology is described as a people, as dwarfs in size, living in the deep forests and hidden valleys of Hawaii, the Menehune are though to sometimes shape-shift and appear in animal form.
Higher up the nearby old hiking trail we had a secret off beat spot which one could only get to by crawling through a 10 feet thicket of forest before entering a area of Strawberry Guava which was about 25 long in order to get to our spot of pakalolo. This time I was up there all by myself and it was 5pm, I had just entered the area of Strawberry Guavas I got this odd feeling of being watched from behind, and a strong feeling of a presence, as I turned I noticed a black dog about 12 feet away staring at me, at first I thought it was a wild dog, but I also had this eerie feeling it was something else, and what happened next I have no rational explanation to, I watched as the black dog moved 6 feet to the right towards a strawberry guava with a trunk about 1 inch thick as I watched the dog move behind the tree it did not come out on the other side. I walked over to the tree where the dog disappeared and could not find any trace of it.
Another time while I was up at the same path with a few of my friends we all got this eerie feeling of a presence, and we heard a distant soft drum beat, we moved over to a stream nearby again feeling more eerie as we looked over the edge we spotted what looked like a yellow tribal feather flume. At this point I got this feeling something ominous was about to happen, as a branch fell over us, we started running and I stumbled over some ancient barbed wire, ruining my pants and as I was there trapped I felt like something was breathing heavily in my neck. I we ran quickly back to the trail and returned home, scared, bruised and battered but luckily only lightly harmed.
You could also read more about the menehune in Jeff's other story, The Barking Dogs at Waimanalo, Another interesting story is about the menehune like 'E'epa which are similar to leprechauns in The Leuprechaun like 'E'epa on the Island of Kauai.