"Contrary to what is often stated, the horse (or its symbol) is not the `Rgveda’s foremost animal: that honour goes to the bull, a symbol of power and might, as in many other ancient cultures. The bull makes his appearance over 400 times in the `Rgveda alone; every powerful Vedic god – Indra, Agni, Varuna, Vishnu, Rudra, etc. – is praised as a “mighty bull”, very rarely as a horse... It is curious that the bull, as either animal or metaphor, receives so little attention from Indo-Europeanists; J.P. Mallory’s and D.Q. Adams’s monumental Encyclopedia of Indo-European Culture has no entry for the bull, while it devotes six pages to the horse"