http://www.cnn.com/2013/06/22/us/ind...html?hpt=us_c2

(CNN) -- A tiger mauled a caretaker who was cleaning its cage, clamping the woman's head in its mouth during the attack at an Indiana animal rescue shelter.

The woman is in critical condition after the attack Friday at the Exotic Feline Rescue Center in Center Point, Indiana.........

The victim was cleaning cages when a worker nearby heard her screaming, Sheriff Rob Gambill said in a statement......

Authorities said the tiger escaped its holding area because a door was not properly shut...........

Again? rule #1....