Is OTHER wrong in the post ? POST : So let me start this off by saying I’m NOT a lazy person, I grew up in a low income family and have always worked as hard as I can at any job I find myself doing. 

That being said. 

Three weeks ago I started a job in a dog daycare as a dog handler. I got this job because the owner of the business is a family friend and she knew I’d been looking for a second job for quite awhile. When I started the job I received barely any training, despite the fact I’d never worked with dogs in a pack setting (they knew this and were perfectly fine with it, they said they would give me all the training I need). 
I was told I’d only be working 15 hours a week, this was a dealbreaker for me since it’s my second job and I need time for my other job- this past week I worked 28 hours. Apart from that the job is very very stressful to the point where during some shifts I find myself going into the bathroom and bust out crying. On a normal day we can get around 50 dogs- it’s just me in a room with them and with that number of dogs theres constant fighting (which I was never trained on how to break up a fight). 
I feel so disappointed in myself that I’m considering quitting so quickly. I’m afraid that quitting will strain my families relationship with the owner. I also don’t want to quit because I know it won’t look good on a resume, and my other job is in a field that is overlooked. 
Any and all feedback would be appreciated!

Tl;dr: I can’t stand my new job but I’m afraid of quitting over something that isn’t worth quitting over. 