Chin patch on BCI?

Hi y’all! I noticed my hypo jungle BCI has a chin patch. I know that Dumerils have them, but is that typical of BCI, as well? I can’t really find any info on it! TYIA! https://uploads.tapatalk-cdn.com/201...4bb7f13e48.jpghttps://uploads.tapatalk-cdn.com/201...f18ace986c.jpghttps://uploads.tapatalk-cdn.com/201...9d01402873.jpghttps://uploads.tapatalk-cdn.com/201...624dfa012c.jpg


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I think all snakes have it so there mouth can open up wider when eating food

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