private List<Location> closestPrey(List<Location> location)
    {
    	Iterator<Location> it = location.iterator();
    	List<Location> closer = new LinkedList<Location>();
    	while(it.hasNext()) {
    		Location where = it.next();
    		if(where.getCol()==getLocation().getCol()-1 || where.getCol()==getLocation().getCol()+1
    		|| where.getRow()==getLocation().getRow()-1 || where.getRow()==getLocation().getRow()+1) {
    			closer.add(where);
    		}
    	}
    	if (closer.isEmpty()) {
    		return location;
    	}
    	return closer;
    }