The pig is a specialty firefighting tool used mainly for roof ventilation, forcible entry and wall breaching.
[1] Invented by a member of the Austin Fire Department, the tool combines the butt-end of a flat head axe on one side and a pick on the other.
[2][3] The pig can be married with a Halligan to create a forcible entry system as an alternative to the classic axe and Halligan combination.
[4]