Baby bear doesn't eat food when nobody is nearby.
I left the baby bear on the ship,and after 5 mins I turned back my ship,then found the baby didn't eat any food.Its food only had 439.5.(Graph 1)
And after I turned back,the baby bear ate 21 fruits,and its food was 733.8.(Graph 2)
If I didn't turn back very soon, the baby bear will be starved to death.(It happened once)