Yes, your squirrel is from Murano probably made at Ferro & Lazzarini. I collect flamework paperweights from Murrrano. Good examples are uncommon but the best were made at Ferro & Lazzarini.
Dave's examples include one colored sulphide made by Vladimiro Furlan, LLP. The Bird with berries is true flamework - It comes from a small series of birds from an unknown maker but I suspect that they were made at F&L.
Eric