Little nightmare - OSRS Wiki

The Little Nightmare is a pet that can be obtained by defeating The Nightmare or Phosani's Nightmare. It is a much smaller version of her. The pet has a 1/800 drop rate in the original encounter, increasing by said amount for every additional player in the room when the fight started; 1/1600 in a duo, 1/2400 in a trio, 1/3200 in a 4-man and 1/4000 in a 5 or higher man encounter. At Phosani's Nightmare, the pet has a flat 1/1400 drop rate.

The Depths, Little Nightmares Wiki

The Nightmare - OSRS Wiki

The Nightmare - OSRS Wiki

Category:Characters, Little Nightmares Wiki

The Nightmare - OSRS Wiki

Pool of Nightmares - OSRS Wiki

Zalcano - OSRS Wiki

Tempoross - OSRS Wiki

General Graardor - OSRS Wiki

Kree'arra - OSRS Wiki

Duke Sucellus - OSRS Wiki

Xarpus - OSRS Wiki

I've check the wiki page a dozen times just to make sure he still drops it : r/ironscape