It is stressful having dependent animals. Fortunately I have a husband who is incredibly laid back ( probably not as involved as I am) and he usually manages to de-stress me when I obsess about animal behaviour. Basically. I fuss too much and he's too laid back so between us, we usually do ok!
When we started out with animals, years ago now, it was much as you say, plums - they were my animals and the deal was that I looked after them. Don't lose heart though for now lovely husband has a good stockman's eye, catches sheep , gives injections, drenches etc and doesn't bat an eyelid.( I had to deal with an abscess though!)