There is another reference besides Poppy, it is the character Willow because she likes to draw art and also talks to animals, in this image Willow talking to the butterflies, which makes reference to Fluttershy talking to the birds in the classroom.
For some reason I didn’t know that Willow from Angry Birds Stella talked to animals and I thought only Fluttershy did, they both seem to have the same thing of talking to animals.