This article is from the Final-Fantasy and other Square Soft Games FAQ, by email@example.com (Nick Zitzmann) with numerous contributions by others.
Secret Hunt allows your character to poach the monsters they kill, and
sell them back at fur shops. One of the key advantages to this is it
makes the enemy completely disappear, which is very helpful for removing
undead monsters (which might otherwise revive).
Fur shops open up during Chapter 3 inside trade cities.