Jake
Chillin' with the herd
There is a pretty wide overlap between sheep and goats, each has breeds that can do what the other is best known for, for your small acreage I'd look at the mini goats, or Icelandic Sheep which are also small, but do need to be sheared. Is the fence barbed wire or sheep type? At 4' its short for most any goat breed. You dont show where your location is, that also can have a bearing as to which species would do best in your area. From what I read in your posts a mini goat breed could well be best for you.