Skogres are encountered during the Zogre Flesh Eaters quest and live south of Castle Wars. An aggressive Skogre may also appear when you bury Zogre bones inside Jiggig . Their name is a portmanteau of "skeleton" and "ogre".
Strengths and weaknesses
Skogres are almost immune to normal weapons (you will hit, but not often, and not hard). Brutal arrows are effective against them, as is the Crumble Undead spell (damage is halved, for a maximum of 8).
They can also infect you with Disease, but you may counteract this with Relicym's balm or Sanfew serum, which may be bought from Uglug Nar outside Jiggig for 200 coins (Relicym's balm only), or made using Herblore. An Inoculation bracelet will protect you as well. When you attempt to bury the bones after killing it, a new one may spawn and attack you.
List of drops
Item Quantity Rarity GE market price Ogre coffin key 1 Always 1,505 Zogre bones 1 Always 507 Clue scroll (easy) 1 Rare Not sold