Capítulo 1914: Unexpected Encounter 

While some of the beasts were moving around the area without owners, Minos and his group approached a hollow where there was a small cave for the size of the beasts in the area.

Arriving there, while the rest of the group looked around for potential problems, Minos looked at the path of stones in front of the entrance to the small cave and noticed the same type of fur here and there.

"White fur... That's probably from a Nine-Tailed Fox of Bella's age." Gloria said as she looked at it and smelled the distinct scent of the fur.

The Sages' sense of smell was very refined. A person at this level of cultivation or higher wouldn't need to get close to something or someone to notice distinct smells.

Since every being had its own natural scent, it was relatively easy to identify the origin of a scent left on something or someone.