I was thinking that the mantis could be in the pagoda on the lake and the centipede could be in the abandoned ant hill. The mantis would be in the pagoda and wouldn’t move until you looked away for fear factor but of course it would move if you attacked. Also it could give you parts for a tier 3 axe or another kind of tool. The centipede would have multiple segments each with low health but there would be a lot of them. Maybe parts for tier 3 bow?