What to know
Elaking has 350 health and spawns in the Meadows, the swamps, the mountains, Black Forest, the plains, the Ashlands, the Deep North, the ocean and the Mistlands.
It takes extra damage from fire; it resists frost; spirit does nothing to it at all. Blunt, slash and pierce land at full damage, so that is what to bring.
Its hardest hit is claw at 100 slash and 40 blunt, out of 2 attacks.
Of everything craftable, 
Thunderblood Crossbow, 
Lightning Strike and 
Staff of Embers put the most damage through what it resists.
It always drops 
Elaking Hair Bundle.
Spawn command
With devcommands enabled, this spawns Elaking in front of you. The third number is the level: 3 spawns a 2-star.
Creature ID: Elaking · all console commands and IDs