Volunteer, work, and find opportunities to work with them
Check out any zoos in your area. Most of them have a Children's Zoo or Petting Zoo there. You can apply to volunteer or intern in those areas. You'll get a feel for what it's like to work with these animals and it'll give you a great idea.
Also, I don't know where you live, but I live in the midwest and it's surrounded with farms, stables, and the like. It might sound intimidating, but ask if any of these places would like an extra hand working with the animals. I went out one day, and asked 5 different places. Two of them said "YES".
Just get out there and ask. The worst they can say is "no"
Also, even though your working with animals, I still recommend looking nice when asking to volunteer/ work/ intern. It made a huge difference with me