If you’re interested in the national Biosymbols of Italy, you can start with the Wikipedia article.

The national flower is the strawberry tree, because it contains the three colors of the Italian flag.  The national bird of Italy is the Italian sparrow, and the unofficial national animal is the Italian wolf, which makes perfect sense, given the importance of the she-wolf in the creation of Rome, according to myth and folklore.  Check out this article for more about the symbolism of the wolf in Italy.