Giant Slug (CR 8)

Huge Vermin
Alignment: Always neutral
Initiative: -2 (Dex) ; Senses: blindsight

AC: 16 (-2 size, -2 Dex, +10 natural), touch 6, flat-footed 18
Hit Dice: 12d8+60 (114 hp)
Fort +13, Ref +2, Will +4
Speed: 20 ft.
Space: 20 ft./10 ft.
Base Attack +9; Grapple +13
Attack: Bite +9 melee
Full Attack: Bite +9 melee
Damage: Bite 2d6+7
Special Attacks/Actions: Spit acid
Abilities: Str 21, Dex 6, Con 20, Int -, Wis 10, Cha 2
Special Qualities: Vermin, weapon immunity
Feats: -
Skills: Climb +9 and Hide +4
Advancement: 13-21 HD (Huge); 22-36 HD (Gargantuan)
Climate/Terrain: Any land and underground
Organization: Solitary
Treasure: None

Source: Converted

Giant slugs dwell away from light, preferring the depths of dungeons and similar places. Giant slugs are able to eat substances like wood or burrow through very hard earth using their rasp-like tongues.

Giant slugs appear as larger versions of normal slugs. They are about 25 feet long and can grow to be 50 feet in length. Most are pale gray in color with a pale white underbelly.