* Ferret: This is the most common and widely recognized name.
* Polecat: This is sometimes used, though it's more accurately the name of the European wild ferret.
* Fitz: This is a nickname that's become increasingly popular, particularly in the US.
* Fuzzbutt: This is a playful and affectionate nickname, often used by those who own ferrets.
* Weasel: This term is sometimes used but can be misleading, as weasels are a separate species.
It's important to note that the terms "polecat" and "weasel" are often used interchangeably with "ferret," but they are technically different species.