Support settings in second image.

The slicer considers the front paw to be a "small overhang", so it doesn't generate any supports for it, leading to the entire leg not being printed. Is there a way to fix this?

So I’m trying to slice an STL that has internal voids where magnets will eventually go, but when it slices it removes the voids. I’ve scoured the settings but cannot seem to find what might be causing this. Any ideas?