The following material is Open Game Content from the Menace Manual SRD
HIPPOPOTAMUS
Species Traits
Hold Breath (Ex): A hippopotamus can seal its nostrils by muscular action and hold its breath for a number of rounds equal to its Constitution score × 10.
Scent (Ex): This ability allows a hippopotamus to detect approaching enemies, sniff out hidden foes, and track by sense of smell.
Skill Bonus: A hippopotamus is agile in the water, gaining a +4 species bonus on Swim checks.
Hippopotamus: CR 6; Large animal; HD 8d8+40; hp 76; Mas 20; Init –1; Spd 20 ft., swim 20 ft.; Defense 14, touch 8, flatfooted 14 (–1 size, –1 Dex, +6 natural); BAB +6; Grap +17; Atk +12 melee (2d6+10, bite); Full Atk +12 melee (2d6+10, bite); FS 10 ft. by 10 ft.; Reach 5 ft.; SQ hold breath, scent; AL none; SV Fort +11, Ref +5, Will +3; AP 0; Rep +0; Str 24, Dex 9, Con 20, Int 2, Wis 12, Cha 3.
Skills: Listen +7, Swim +11.
Feats: None.
Advancement: 9–16 HD (Large); 17–24 HD (Huge).
