Gravis was a bit surprised by the Red King's words, and he also realized why he hadn't fully believed that the water buffalo was a false snake. Apparently, the water buffalo had been sincere in his words and had actually meant what he said.
Usually, Gravis would talk to the Red King more about his dislike for the buffalo since he was pretty sure of the reason why the Red King disliked the water buffalo, even though the water buffalo was kind in nature. Gravis was also sure that the Red King didn't even know the reason himself. Yet, since Gravis viewed the Red King as his enemy, he saw no sense in trying to convince him.
How did Gravis know the reason for the Red King's dislike even though the Red King didn't know it himself?