Out of every interpretation I've seen of the theme so far, this is one of my favorites :) I like how you introduce the gameplay mechanics, when playing the first level I was wondering how you could make it more complex besides adding walls (which felt a bit buggy, they don't stop my line right away, and they should make a "blocking" sound to let the player know), and the different lamas properties are well communicated. So kudos on that!
One thing that's too bad is that waiting for the lamas to come is a bit boring. Maybe when the mouse is not moving, you can use the keyboard to throw food around, or play a tune to lure them? Anything to engage the player instead of having them stand around doing nothing.
Also I wasn't really a fan of the music, I think it might've been better to focus on making one or two great tunes instead of one for every level, but everyone has different tastes and I salute the efforts you've put into it nevertheless :) All in all, a super original entry, congrats!