* Black Fox Ferret: This is a recognized color variation of the ferret, known for its striking black coat with a white tip on the tail.
* Black Dutch Rabbit: This breed is known for its black coat with a white band across the forehead.
* Harlequin Rabbit: These rabbits come in a variety of colors, including black and white patterns that might resemble a "fox" pattern.
It's important to remember that rabbits can come in many colors and patterns, and "black fox" might be a colloquial term used to describe a specific rabbit with black fur and markings that remind someone of a fox.
If you have more details about the rabbit you're asking about, I might be able to help you identify it more accurately.