There are many different ways to figure it out. But they may not show themselves when you first meditate or try. They have to usually feel a need to. Usually, as I'm speaking from experience, they don't just pop up to idly chat. They are there to give you lessons and instruction, or help you out. Some questions to ask yourself:
Is there an animal you constantly see whilst dreaming?
Is there an animal you are drawn to?
There's hundreds more or less they are variations of those two questions.
Good luck on your search. :)