What is Sagittarius's biggest enemy?

Virgo: Virgo is very calculating, and frank Sagittarius is definitely no match for virgins.

Taurus: Taurus is stubborn and hard to trust others, while optimistic Sagittarius is hard to be friends with Taurus.

Pisces: Pisces is sentimental, delicate and sensitive, and a little artificial. Sagittarius hates unnatural people or things.