Chapter 9: The Marshal - S2-E1
Plot hole: The Tusken raiders offer a Bantha to the dragon to make it sleep longer. To do, so they wake it up, which seems to defeat the point, but let's assume they know what they are doing and the dragon catches up on sleep later. Regardless, the dragon already ate one the day before. If it does not stay put even after just eating a Bantha a day before, it's hard to imagine how feeding it can be productive, considering that they all live in a desert and have just a literal handful of large mammals. The dragon should have eaten them all in a week, at that rate.
Chosen answer: They could be just like wrinkles from age, like the elderly Togruta in the Zygerrian slaver arc in The Clone Wars series, as Ahsoka is considerably older than her animated appearances. I think there is probably a character design/stylisation aspect to it as well - the other Togruta we've seen in live action, Shaak Ti, has four segments or folds in her lekku that were not visible in her Clone Wars appearances, so it would seem the character design in Clone Wars and Rebels reduces such features.
Sierra1 ★