"feed and clean out a Fire Crab without sustaining serious burns"
-- Hagrid's Care of Magical Creatures Exam (OP31)
Also written fire-crab (OP31)
The fire crab looks like a tortoise with a jewelled shell which can shoot fire out of its rear end.
It is constantly in danger of being killed for its shell, which unscrupulous wizards will use as cauldrons. The fire crab is native to Fiji, where there is a coastal reserve set aside for its protection (FB).
Fifth years, for their Care of Magical Creatures O.W.L., had to demonstate how to feed and clean out a fire crab without sustaining serious burns (OP31).