Agree with PPs. Working with animals is usually paid well. How old is your child?
I always wanted to work with animals, but the lack of money working in at a large petting farm just wasn't enough to live on, never mind take proper care of my own animals with. And the number of disagreements with management on animal welfare was ridiculous. IMO I like animals too much, in managements opinion I was too soft (getting rid of animals because something better needed that space, and not always rehoming them!) and day to day things too like the quality of food and basic care.
I wanted to be a vet but felt it wasn't for me after shadowing a vet. This time mainly due to clients, many so lacking in care or unknowledgeable and just not willing to listen. But also the vet I shadowed mainly did routine treatments, lots of teeth cleans, neuters etc. Less interactive with animal care than I wanted and nurse wages were low when I looked.
I was a dog trainer for a good few years, worked for someone then set up my own when that company shut down. LOVED that! The people who came to you wanted your help to fix things, and if it didn't work because they couldn't be arsed they wouldn't come back! HAHA! But then I needed my evenings and weekends back so gave it up. I would love to do it again and hope to.