Although you will have days off, you are pretty much on call 24/7. You will also deal with the cycle of life on a daily basis. Furthermore, you will see the horrors of poaching and animal cruelty. These are all stressful…not too mention that you will clean poop 200+ days a year. The tension can build and the stress can mount.
But just when it seems like you can't take anymore, you get selected to go to a conference in South America. Sweet.