Hippopotamus

Creature 5

Large
animal

Perception: +11; low light vision, scent (imprecise) 30 feet
Skills: Athletics +13, Stealth +11, Survival +11; Str +6, Dex +2, Con +6, Int −4, Wis +4, Cha −2

Deep Breath The hippopotamus can hold its breath for 5 minutes.

AC: 21; Fort +15, Ref +9, Will +11
HP: 85

Speed: 25 feet, swim 20 feet

Melee ◆ jaws +15 (deadly d10), Damage 2d8+8 piercing

Melee ◆ foot +15, Damage 1d10+8 bludgeoning

Aquatic Ambush ◆ 30 feet

Capsize ◆ (attack) The hippopotamus tries to capsize an adjacent aquatic vessel of its size or smaller. The hippopotamus must succeed at an Athletics check with a DC of 25 (reduced by 5 for each size smaller the vessel is than the hippo) or the pilot's Sailing Lore DC, whichever is higher.

Trample ◆◆◆ Medium or smaller, foot, DC 22 basic Reflex

Source: Pathfinder Monster Core 2

Running this fight? Add the hippopotamus to the initiative tracker: type its name and the AC, hit points and Perception for initiative fill in, and the book button shows this stat block mid-fight.