Xoc taught herself how to shapeshift.
Her only other form besides human though is a jaguar as she does not change not any other creature.

She has used this ability so often that she has developed some permanent alterations because of it.
• enhanced eyesight at night
• enhanced hearing
• the ability to growl while in human form
• feline-like reflexes, agility, and flexibility

She taught all of her cities how to do the same and they've all since chosen an animal and stuck with it.

The only known ones are:
Jaguar (Xoc)
Panther (unknown)
Bobcat (unknown)
Red-tailed hawk (Hadwin)
Python (unknown)
Wolf (Sochihiro)
Monkey (unknown)
Parrot (unknown)

The most obvious way to distinguish her from other Jaguars is by her scar.