Farm animals are definitely cute, and when you add in a positive impact, a place like Sanctuary One Care Farm in Oregon is a great place to learn about them. As a Care Farm, Sanctuary One uses animals as therapy for people, provides an opportunity to build stewardship, and rescues animals that were kept as pets but had to be removed from homes. For teachers interested in building Nature Stewards in your class, check out this Stewardship Education Guide from Association of Fish & Wildlife. "Learning to Give" also provides good stewardship information for Teachers. Edutopia has good resources for developing service learning in classrooms. My favorite resource for developing local and global citizens through service learning is Kid World Citizen. An awesome resource for kids to think about the world and their relationship with it is World's Largest Lesson.