Hi Harold and welcome. The label is not in the file Murano 101 at the top of the threads page. There are a couple of Mazzega labels but neither are yours. Could you add this label to the file?
I can understand why you would think it was Seguso but the label says it's not.
Very well made, although I am not an animal collector, there are several here who are and they might be able to help ID this one.