"Nevertheless, in order to bolster his claim for the antiquity of the "Vedic horse (as) a native Indian breed", he connects this dead horse with the Rigvedic one, which is described as having 34 ribs (Rigveda 1.162.18). But, while horses (Equus caballus) generally have 18 ribs on each side, this can individually vary with 17 on just one or on both sides. This is not a genetically inherited trait. ... As for the number 34, numeral symbolism may play a role in this Rigveda passage dealing with a horse sacrificed for the gods. The number of gods in the Rigveda is 33 or 33+1, which obviously corresponds to the 34 ribs of the horse, that in turn is speculatively brought into connection with all the gods, many of whom are mentioned by name (Rigveda 1.162-3). But this is mere philology, not worthy of "scientific" study..."
January 1, 1970
https://en.wikiquote.org/wiki/Michael_Witzel