Come on, bear. Google it. Caterpillars and moths.
It's using a very roundabout way to teach children that caterpillars turn into moths. It's cute that the bear keeps coming by to keep him company, but the caterpillar doesn't really seem to care, need company, or be thankful. It's kind of minimalist, but it could do with a little more character development, otherwise I don't really care about these characters.
Message
Caterpillars turn into moths.