The polar bear noticed that the keeper was different and acted differently

This is a video of observing the behavior of polar bears.
Polar Bear ,Lila (female/8),Lara(female/28),Denali(male/29).
They live in Maruyama Zoo, Hokkaido, Japan.
Denali (father)
Born November 9, 1993 in Hogle Zoo, USA
There are 8 cubs between Denali and Lara.
Lara (mother)
Born November 20, 1994 in Japan.
A proud mother who gave birth to and raised 8 cubs.
Lila (female)
Born December 21, 2014 in Japan.
The 8th cub of Denali and Lara.
(Recorded on June 5, 2023)
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