Related Clues:

• Cerberus guards it
• Hellish place
• Abode of the dead
• Ninth planet from the sun?
• Pluto's domain
• Hotness epitome
• Disney pooch
• Demoted planet
• Notable reclassification of 8/24/2006
• Pluto's place
• Dwarf planet
• Where the Phlegethon flows
• Pluto's alias
• Newly classified ''dwarf planet''
• Toon mutt