Tobiano
ToTo / nTo
Effects
- Skin: skin will be light pink under any white patterns
- Horns and hooves: hooves will be light where white leg markings connect [Horn & hoof color guide]
- Eye color: tobiano generally doesn't affect eye color, because tobiano markings shouldn't touch the eyes. [Eye color guide]
Appearance
Tobiano is characterized by tall white socks connecting to the topline of the horse.
The coloured areas are usually round-shaped and appear as larger and smaller holes in the white pattern, starting from the head, chest and flanks but can also appear anywhere else on the body.
Facial markings should always be minimal, generally not exceeding the maximal area of Natural white.
It is not uncommon for tobianos to have a "split tail" appearance where half the tail is white and half the tail is colored (it can be split either way - white top and colored bottom, or colored top and white bottom).

Minimal tobiano
chestnut + tobiano

Tobiano
chestnut + tobiano

Tobiano with split tail
chestnut + tobiano

Maximal tobiano
chestnut + tobiano
Optional effect: Cat tracks
Cat tracks causes small spots or "holes" in the white markings, and can have a roaned or clumped-together appearance.
These small spots will affect mane/tail and hooves as shown in the examples.
Cat tracks are not written in the phenotype, a tobiano horse with cat tracks would still only be described as tobiano.

Tobiano with cat tracks
chestnut + tobiano

Tobiano with clumped cat tracks
chestnut + tobiano

Tobiano with extensive cat tracks
chestnut + tobiano
Optional effect: Calico
Calico tobiano causes large patches of darker and/or lighter color similar to the base coat.
The patches should have an apperance similar in shape to regular tobiano markings, and can also display cat tracks.
These calico patches can optionally affect mane and tail where it touches, but it is not required. White markings should still affect mane and tail where it touches.
Calico is not written in the phenotype, a calico tobiano horse is still only called tobiano.

Calico tobiano with darker patches
chestnut + tobiano

Calico tobiano with both lighter and darker patches
bay + tobiano