"xxxx", you knew what the hours were when you started and you knew about the animals. The job is what the job is. If you don't find it to your liking this might not be a good fit for you and it's probably best you look elsewhere now rather than have your negativity become an issue. The work is as balanced as we can make it, you'll get the hang of it in a few more weeks. I'm sure you can appreciate that nothing in any job ever works out "dead even". We can't control how messy a given space will be on a given day; sometimes it's a breeze, sometimes it takes more effort on our part to get it clean to our standards."