Only if sex is Sexual. For example, mules would have a fertility of 0. There is an age applet. An example of the code used is given below.
Race is the name that appears at the top of the applet.
This should describe the species and race who will use these tables. Age units is the unit that age is given. Here the value years is used. Number of levels is the number of rows in the tables. There is then a section that repeats for every row of the table.