Riddle

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.

Choose an answer

A.Bacteria
B.A parasite
C.A germ
D.A virus
Hint: It's a 2-word phrase with 6 letters, starting with "A".

Answer

A virus

Why this is the answer

A virus is invisible to the naked eye, can be deadly, and is the opposite of "man's best friend" (a dog) -- it's a tiny but tough enemy of human health.

This riddle is filed under Rhyming Riddles and rated Medium.

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