Apparently Spike is going to be a dog in Equestria Girls. Now this raises two points. 1. In MLP Twilight considers Spike to be nothing more than a glorified pet. 2. We know that Spike loves Rarity and we've seen that she knows this and sort of reciprocated it, so this means that in Equestria Girls there will be a secret bestiality plot line with Rarity and Spike.