The signs and how harmful/harmless they are (thanks Septic )

Looks harmful, is harmless: Virgo, Leo, Capricorn, Aries

Looks harmless, is harmful: Libra, Gemini, Cancer, Pisces

Looks harmful, is harmful: Scorpio, Sagittarius, Aquarius, Taurus

No I am not harmless I will rip your throat out how dare you-