It has been discovered through DNA analysis that the Shakarites are hybrids of the Sythralls and Scratchians. Over the millenia, the Shakarites have been groomed by the Sythrall, to carry out their mission. The Shakarites are at least 6 and a half feet tall on average, though Shakar was 7 feet 7 inches tall. It seems that in earlier years, before the degradation of DNA, the Shakarites used to be even taller. Even just 150 years ago, the Shakarites were much taller than they are nowadays. This can explain why Shakarite and Ugist philosophies are eerily similar to Sythrall ones. Because they the Shakarites are hybrids. And Johnathan Ug, who founded the Ugism religion, was a son of a Shakarite. Thus, Johnathan Ug, a massive 7 foot tall cat, is 1/4 Sythrall. That means that before Mr. Grizzly received the Sythrallic genetics, he was 1/64 Sythrall. So Mr. Grizzly, is now slightly more than half Sythrall, being 33/64 Sythrall.
Shakarites being half Sythrall is approved by @SCP_Filler