Mount Boosts:


White Horse - Speed +20 / HP +1000

Black Horse - Speed +40 / HP +2000

Leopard - Speed +60 / HP +3000

Tiger - Speed +80 / HP +4000

White Bear - Speed +100 / HP +5000

Rhinoceros - Speed +120 / HP +6000

Dragosaurus (Dinogon) - Speed +140 / HP +8000


The first star on each mount seems to double their HP bonus.
Not sure about stars beyond 1 until tomorrow. I will update this then.