Elsie can tell you that goats kind of do what they want, whereas sheep will accept leadership and be a flock not in revolt. Goats will just go wherever they please, so a leader GOAT is always necessary to herd goats along.
If you call a cat; it will ignore you and keep doing what it wants; never acknowledging that you are there.
If you call a goat; it will ignore you and keep doing what it wants; while acknowledging that you are there and daring you to do something about it!