Blue Svarpian
As you take the left turn and chance upon the animal trail, the trunk of a big tree comes into view. It's branches reach high up, obscured by the rest of the plantlife. As you gaze up in wonder, you spot an unusual bright blue between the leaves. And sure enough, the ribbon of blue moves, slithering down through the branches and down the trunk until you come eye to eye with the blue svarpian.

Quick! Charm it!

Inch your way around the big tree and continue on.
Or, decide you've had enough and head back to the Hollow Tree.