They weren't technically mine but my little brother got a couple pet crabs. They were the little one you can get at Walmart about the size of a quarter. He wanted them after he found out he was a Cancer. They were cool to begin with as they scuttled across the bottom of the sand. The creepy factor came when they would climb and hang upside-down on the cover of the tank. After a couple of days of dealing with them crawling everywhere and my family collectively realized that crabs are basically aquatic spiders. We haven't got pet crabs again. Since then I've heard stories of people who got crabs as pets, and had them escape. Then when they were moving out of their apartment, found the crab alive and happy three years later. The more stories I hear of escapees, the more they creep me out. Have you ever had a pet that became creepy or was creepy?