There's a fairly common misconception that the character of Krystal was originally meant to be a cat in Dinosaur Planet, prior to being redesigned as a vixen when the project was transformed into Star Fox Adventures.

The reality is that despite having a somewhat feline look, Krystal was always intended to be a fox as early as Dinosaur Planet, her original backstory even claiming that she belonged to the "Vixon Tribe" on planet Animus (Sabre and Randorn on the other hand belonged to the "Wolven Tribe", as they were both wolves). Former Rare artist Kevin Bayliss has stated multiple times that she was meant to represent a stylized arctic fox in particular.