We've had this discussion many times on this board, and there is a bit of disagreement. I believe VMCAS says not to include pet owning experience. I personally would not put everything that I did with my animals, though there are some exceptions. If a pet required serious treatment - such as the cancer treatment or you did something specific like showing, breeding dogs/cats/horses I would include that. These types of things show a great deal of commitment and work and require a lot more research/knowledge than the typical pet owner situation. For example, when we bred my dog we had her OFA hips/elbows certified, her eyes CERF certified, an ECHO, as well as having the puppies eyes checked for retinal folds.
As for what sofficat said, I personally wouldn't put down things like taking care of a racoon for 24 hours as it seems that little things like that would take away from your substantial experience. It really is up to what you want to do personally, but I don't think adding things like Pet Ownership - my whole life and describing how you walked your dog, fed it, gave it water will add anything at all to your app.