The material below is Open Game Content from a 3PP Source
This giant, furry bat is nearly the size of an ox, with dark leathery wings that open wider than two men with arms outstretched.
Dire Bat CR 2 (XP 600)
N Large animal
Init +2; Senses blindsense 40 ft.; Perception +12
AC 14, touch 11, flat-footed 12 (+2 Dex, +3 natural, –1 size)
hp 22 (4d8+4)
Fort +5, Ref +6, Will +3
Speed 20 ft., fly 40 ft. (good)
Melee bite +5 (1d8+4)
Space 10 ft.; Reach 5 ft.
Environment any temperate or tropical
Organization solitary, pair, or colony (3–8)
The dire bat is usually found lairing in desolate areas, resting in caves or other secluded areas during the day and taking to the skies in search of prey at night. This immense creature has an average wingspan of 15 feet and weighs roughly 200 pounds.
The dire bat generally doesn't shelter in groups larger than eight, often living a solitary life. A dire bat prefers feeding on livestock and herd animals.
Dire Bat Animal Companion
Starting Statistics: Size Medium; Speed 20 ft., fly 40 ft. (good); AC +0 natural armor; Attack bite (1d6); Ability Scores Str 9, Dex 17, Con 9, Int 2, Wis 14, Cha 6; Special Qualities blindsense 40 ft.
7th-Level Advancement: Size Large; AC +3 natural armor; Attack bite (1d8); Ability Scores Str +8, Dex –2, Con +4.