The bear is clearly annoyed, first, the back wall of his cave start vibrating and making noise, the wall was all flat and smooth and the reason why the bear choose that cave to sleep all those years ago.
Then after the wall thing, a new monkey appeared, contrary to the small monkey the bear eat and catch from their trees, that monkey was bigger with red fur. It was chipping like a bird, and didn't notice the bear approaching, and he managed to hit it hard, sending it flying. Unluckily, the monkey has fallen down the hole in the middle of his territory, and he was unable to get to hit. One day he will be so big, he will be able to got down the large hole, explore the hidden valley and finally catch the big bird that live at the edge of his territory.
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And then after that, the monkey came back, and managed to run away after taunting him, which would be bad enough, if for now months he was not feeling through his territory ability that something was lurking in his land, and being totally invisible when the bear came to look for it.
The annoyance was after all a powerful motivator and maybe the bear took it a bit too easy lately, he would have to go back to hunting, maybe leave his territory a bit and catch some big things further down the mountain.