I don’t remember much but there was your stereotypical hero male and love interest woman. Set in some kind of lavish forest so I think it was a rain forest. I don’t remember seeing the monster/alien but I know the couple ended up looking after a little boy for a while but the monster killed him anyway. Kind of like a Predator meets Aliens I guess because if I remember correctly the little boy had knowledge of the monster and I think he may have been of Native American appearance? I saw this movie around 20 years ago but I don’t know if it was new. My dad was watching it on TV and I was in the room gaming but half watching.  And for some reason I remember diagonal stripes… I really have no idea why! As if they were claw marks maybe. Definitely in colour and English.