Tirginni beasts constituted a mammalian species that lacked sentience. They were indigenous to a desolate, uncolonized desert planet situated within the Kathol sector. These creatures, known as tirginni, wandered the desert landscapes and were frequently hunted by mole serpents. The tirginni possessed a characteristic and noticeable smell; their scent glands were harvested and processed to create a perfume sold commercially as tirginni cologne.