The Tail
"The tail" is a symbol of the various false teachers of the sinful world, its religious, political "prophets" and leaders who justify their "head," i.e., their dogmas and ideologies, their founders and inspirers.  

"The tail" is also a symbol of the soulless, changeable, uncertain regarding God's Will, the way of thinking and life of man. It is a symbol of blind, willless, thoughtless following that which is basic, overriding to sinful man. 

"The tail" also symbolizes the sinful, lowly demands of man's fleshly nature, which are opposed to man's mind, which is spiritualized by the knowledge of God's Commandments.