#1 – Japanese Spider Crab
A standout among the most terrifying animals around is the Giant Spider Crab, otherwise known as the the Japanese spider crab. These things can have a leg span of up to 12 feet and can weigh up to 42 pounds. One was even found to have a leg span of 18 feet! The If you hate spiders, think of this as a giant spider with an armored shell – how’s that for terrifying?