The Animal has been one of the best particle releases in the past few years for heavy oil...With the right drill pattern of course, but is one of the best oil pattern balls out right now. Personally, only the Rule, Ultimate Inferno, Goliath, and from what I hear the Shock are the only balls out right now that compare on super oil pound for pound..
Of course as a particle ball, the longer you use it, the weaker it will get, but people don't understand that it happens on every ball, not just particles...Drill it for a pattern you want to use it for, and don't throw it on anything else. I drilled mine for carry down when the lanes get tighter and moving right instead of left is a must, and it works well...
It lasted well over 150 plus games, then the shell finally seperated, but I have another one i'm waiting to drill..
hope it helps!