For minor technical procedures, sheep are best restrained by
a. applying a shepherd's crook to the rear leg.
b. tilting them onto their rump.
c. being cross-tied in stocks.
d. being pushed up against a barrier.

 This normally depends upon the size of the sheep. All four answers will work. There are many different ways to restrain a sheep, depending upon what you need to do to it. Once you've caught the sheep, you can press it against a wall or straddle it to limit its movement. A halter is one of the easiest ways to restrain a sheep for treatment or close inspection. If you want to tip a sheep then 
a. tilting them onto their rump would work best.

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