A tiny bear is the world's greatest metaphor - it can be used in a large variety of different situations or to explain. The real symbolism of a tiny bear is not anything specific, and can be bent to any distortion the user should think of.
"He's a loner, never goes out, never has any friends... like a tiny bear."
"If I don't watch out, I'll be stuck in a really difficult situation... like a tiny bear."
"Hitler rose to power by slowly moving through Czechoslovakia, to Poland, and claimed a huge empire... like a tiny bear."