I'm not man's best friend, I'm their enemy,
I can mark your end, yet you do not see me,
I am very small, but very tough,
If you have me, then you have it rough.
Within, I clean all that is bad and is old.
I make juice that's the color of gold.
Should I die, a filter machine would you need assembled to replace me and beans I resemble.
Select a pack of riddles and try to solve it in an interesting way.
This riddle appears in the following downloadable PDF files: