This equation uses a vCalc table containing estimated estimated top speeds of a number of animals. You can select the animal by name and that animal's estimated top speed will be returned.
This equation will likely be used more often as an Equation-in-Equation(EiE) or an Equation-in-Constant (EiC); that is, when you are building and equation that needs to use the speeds of one or more of these animals as a constant in a computation, you will drag-and-drop this Top Speed of Animals equation into the equation editor thus enabling you to use this equation to supply speeds by choice of animal without having to code that part yourself.
Example of using this as an EiC: Top Speed of Horse