Cinnamon Ferret and Sable Ferret from Minecraft Dungeons.

Ferrets:

Visual Design & Variants:
Both the Cinnamon Ferret and the Sable Ferret design should be imported directly from Minecraft Dungeons into Minecraft. Their long, sleek models and distinct textures provide a perfect "Vanilla" look that bridges the gap between the Fox and the Ocelot.

Cinnamon Ferrets: Would spawn in Taigas and Old Growth Taiga biomes, blending with the brown needles and dirt.

Sable Ferrets: Variant of Cinnamon Ferrets: Spawn in Snowy Taigas and Grove biomes, acting as the "arctic" counterpart with their darker, high-contrast fur.

The "Snow Diver" Mechanic: Unlike any other mob, the Sable Ferret could have a unique "diving" animation. In snowy biomes, it can disappear into a snow layer and re-emerge with a "find" in its mouth—such as a Rabbit Foot, Bone Meal, or Sweet Berries. This makes exploring cold biomes much more rewarding.

Taming & Interaction: They could be tamed using Raw Rabbit or Raw Chicken. Once tamed, they could have a "playful" AI, occasionally bringing the player "gifts" (similar to cats) or following them closely through dense forests where larger pets might get stuck.