This massive creature has gray hide and an overlarge mouth with teeth large enough to tear through the hull of a small boat.
Speed 30 ft., swim 30 ft.
Str 19, Dex 10, Con 16, Int 2, Wis12, Cha 4
A submerged hippo that surfaces under a boat less than its space can capsize it by making a CMB check. The DC of this check is 10, or the result of the boat pilot’s Profession (sailor) check, whichever is higher. For each size category the boat is larger than the hippo’s size, the hippo takes a cumulative –10 penalty on this CMB check.
A hippo can hold its breath for a number of rounds equal to 5 times its Constitution score before it risks drowning.