According to the TV Tropes Wiki, which has no reason to lie to me, ferrets have become a popular type of animal sidekick character. Personally, this troper hasn't noticed it so much, but since most of the examples TV Tropes cites for this are from manga, I could easily have missed it. And since ferrets deserve more attention, why not give it to them.
The Weasel Mascot shares some qualities of more traditional pets such as the Loyal Dog and the Sarcastic Cat. They tend to be inquisitive and playful and have a good wholesome streak of kleptomania to them. TV Tropes says that the Weasel Mascot makes a good ironic deadpan snarker
Game and Story Use
- Cats are over-done. If you're looking to give a character an unusual animal companion, consider a ferret.
- Hey, it works for the Beastmaster.