'Forgotten Beasts' (z-F) are massive, unique creatures that emerge from the 'Caverns'. They have random body plans, materials (e.g., 'made of fire', 'covered in scales'), and special abilities (e.g., 'toxic breath', 'web-spinning').
Strategy:
- Scouting: Use 'Scouts' (v-l) or 'Animals' (v-a) to detect them before they reach your main fortress.
- Choke Points: Lure them into narrow corridors or 'Trap' (b-T-t) filled areas.
- Magma/Water: If possible, use 'Magma' (d-m) or 'Drowning Chambers' (d-h) as a last resort.
- Militia: A well-equipped 'Militia' (m) with 'Steel' or 'Adamantine' weapons and armor is essential. Focus fire on vulnerable body parts.
- Sealing: If all else fails, seal off the cavern entrance with 'Walls' (b-C-w) and 'Doors' (b-d) to contain the threat.