youtube pig castrations:

http://www.youtube.com/watch?v=RQinXVnZglw
http://www.youtube.com/watch?v=5ud4IFMtko8
http://www.youtube.com/watch?v=_jQnIdeLzRc
http://www.youtube.com/watch?v=XEdy13xeQVg
http://www.youtube.com/watch?v=5n0RSAYJeI0