To get to the southern part of my county I have to drive through YNP.
If the animals are leaving the park, it’s likely because we have had the harshest winter in three decades. Too much snow drives the animals out of the park.
As for earthquakes, I was in one in August ‘59 - just a few miles from Yellowstone. My first earthquake was a 7.4 +/- and killed 28 people. 4.3 is doo-doo.
Yellowstone has a long way to go before the caldera (it’s NOT a volcano) blows.
There will be plenty of major signs - excessive ground heating near the Norris Geyser Basin that will melt your boots, significant rising of the level of Yellowstone Lake, multiple dormant geysers becoming active again and the like.
All is well.
This is the part where we are supposed to start running in circles as if our hair is on fire and crying about how man is destroying the planet...global warming, you know, that sort of stuff.