Evil sheep?

In translating 6.17-18 for my translation assignment, I was caught unaware of the threatening presence of the sheep who would be guarding the fleece.  Sheep carry with them multiple association, many of which are influenced by Christian imagery.  Sheep are docile creatures that can easily be led astray.  They need to be guided and protected.  This is the only context where sheep are vicious ravenous creatures.  The green river reed tells Psyche that the hot sun makes them enraged and that their sharp horns, stone solid foreheads and poisonous bites can all hurt and damage people.

Do any of these connotations carry over into modern day culture?  Why yes, they do.  "Evil Sheep" is a popular cartoon and the concept of demonized sheep was converted into a popular cult flick in New Zealand.  The common thread that strings the concept of evil, aggressive sheep together are the eye color which usually changes to a demonic red.