The bizarre incident took place on April 16 at Toronto Zoo. The onlookers were shocked when an unidentified woman jumped into the Sumatran tiger enclosure just to get her hat.
The tiger appeared to lunge at the woman, but a second fence kept them separated.
She jumped between the interior and exterior fence and was separated from the Sumatran tiger byjust a thin layer of braided wire.
A probe into the incident has been initiated.
A man in his early 20s was killed by an endangered tiger after he allegedly jumped into its moat zoo in Delhi in September 2014.