Pteranadon (CR 3)

Large Animal
Alignment: Laways neutral
Initiative: +2 (Dex); Senses: low-light vision, Listen +4, and Spot +6

AC: 15 (-1 size, +2 Dex, +4 natural), touch 11, flat-footed 13
Hit Dice: 3d8+9 (22 hp)
Fort +6, Ref +5, Will +3
Speed: 20 ft., fly 80 ft. (average)
Space: 10 ft./5 ft.
Base Attack +2; Grapple +10
Attack: Bite +5 melee
Full Attack: Bite +5 melee
Damage: Bite 1d8+6
Special Attacks/Actions: -
Abilities: Str 18, Dex 15, Con 16, Int 2, Wis 15, Cha 11
Special Qualities:
Feats: Alertness; Flyby Attack
Skills: Listen +4 and Spot +6
Advancement: 6-10 HD (Large)
Climate/Terrain: Warm hills
Organization: Solitary, pair, or flock (3-12)
Treasure/Possessions: None

Source: Serpent Kingdoms

Pteranadons are fishers, used to hunting their prey on the wing. They do not generally like to fly into a raging melee on the ground, but are more comfortable in the swoops and dives of aerial combat with other flying creatures or mounts.

Carrying Capacity: A light load for a pteranadon is up to 300 pounds; a medium load, 301-600 pounds; and a heavy load, 601-900 pounds. A pteranadon can drag 4,500 pounds.