The person in the photo above is my daughter who is in her element hiking with dogs and enjoying the natural beauty of the mountains. Although the dogs are a lot of responsibility she absolutely loves her work
Of course if you don't have canyons you can still take advantage of your natural environment for dog walking, be it woods, beach, desert, corn fields or whatever part of nature you have available.
If one wants to work in the beauty of nature here are some other outdoor occupations to consider; artist, gardener, snow shoveler, newspaper route, window washer, park ranger, utility worker, farmer, surveyor, writer, photographer, house painter, biologist, archaeologist, and numerous others.
As Joseph Campbell stated -- Follow Your Bliss