Increasing numbers of tigers has led to an increase in tiger attacks.
The masks are only the latest in a number of measures in the effort to eliminate deaths by tiger attacks.
Occasional tiger attacks still occur, but these are no higher than at other wildlife reserves.
Already this year almost 300 people had been killed in tiger attacks on the outskirts of Singapore.
Black bears are usually safe from tiger attacks once they reach five years of age.
This was followed by a fatal tiger attack in 2004.
When they arrive, the tiger attacks and kills her.
Occasionally human behavior will inadvertently provoke tiger attacks by triggering their natural instincts.
Because of rapid habitat loss attributed to climate change, tiger attacks have increased in the Sundarbans.
She survived, and went on to survive 17 more tiger attacks, though none as bad as the one in Bangor.
