The Yattho are sentient mammalian humanoids. The Yattho could easily be identified by their three eyes and their goat-like snout. Female Yattho also have three breasts. Yattho are also able to sense one another's emotions and disposition by noting subtle changes in body heat and skin color. The Yattho have excellent vision, able to resolve more colors than most species, and even able to see into the infrared. Yattho have two stomachs, having evolved from herbivorous grazing animals who lived in herds on the mountains and highlands of their homeworld.