I own goats, their fun to watch and be around but are a pain in the butt. Mine don't get grain they live of pasture's spring-fall, and get good clean hay in the tub winter with a loose mineral and lots of fresh water, mine will not drink unless they get their water prayed out/cleaned with fresh water everyday. I had pygmy's at one time, and if they can get their head through the fence they will fit their body, how I have no idea but they would, which became a problem when my grandmothers dog decided she likes goat. I don't know much about bloodlines, but they do work great for rotating pastures with other livestock, and children love them. Mine all walk on leashed and tie for their hooves to be trimmed/deworming/vaccinating. Mine enjoy walks on a leash. Coyotes are my main problem with my goats. I bathe my Billy's but no so much my nanny's. I have a toxic plant guide book for goats and remove all the toxic plants, but there's been times when I didn't see one and find it later but the goats never touch it they eat everything else around it. But as Celeste said Billy's do stink and you can smell them from a mile away. Goats do better on large pasture's they like to roam and taste different thing's, my goats never stand still to eat they bite and then run to the next plant.
Hope this helped.