TEXT: Castles & Crusades
  Druid Pets
  Master List of Companion Creatures Available via the Animal Friendship Spell
  Note: The Castle Keeper must always determine what is or is not an appropriate creature; some 
  may not be found on a particular campaign world, or the CK may rule a particular creature is not 
  suitable for treatment as an animal companion.
  Animal Companions for starting Druid (1st Level) characters 
  (animals, total of 2 HD, neutral, animal intelligence):
  Ant, Giant, Worker (2)
  Baboon (2)
  Bird of Prey, Normal (2)
  Cat, Normal (2)
  Dog (2)
  Horse, Riding
  Jackal (2)
  Pony
  Rat, Giant (2)
  Raven (2)
  Snake, Venomous (2)
  Spider, Small (2)
  Wolf
  All Animals Available in Monsters & Treasure book:
  1 HD Animals
  Ant, Giant, Worker
  Bird of Prey, Normal
  Baboon
  Cat, Normal
  Dog
  Jackal
  Rat, Giant
  Raven 
  Snake, Venomous
  Spider, Small
  2 HD Animals
  Ant, Giant, Soldier
  Baboon
  Boar, Wild
  Frog, Giant
  Herd Animal
  Horse, Riding
  Lynx, Giant
  Pony
  Wolf
  3 HD Animals
  Bear, Black
  Crocodile, Normal
  Horse, Light War
  Lion, Mountain
  Pony, War
  Shark, Normal
  Spider, Medium
  4 HD Animals
  Bird of Prey, Giant
  Horse, Heavy War
  Lion
  Lizard, Giant
  Toad, Giant
  5 HD Animals
  Ant, Giant, Queen
  Spider, Large
  Tiger
  6 HD Animals
  Snake, Giant Constrictor
  Bear, Brown
  7 HD Animals
  Crocodile, Giant
  Elephant
  8 HD Animals
  Bear, Cave
  14 HD Animals
  Shark, Giant
  16 HD Animals
  Dinosaur, Triceratops
  Dinosaur, Tyrannosaurus
  
SOURCE: textdata/thevault/Castles & Crusades Siege Engine/Castles & Crusades Character, Cheat Sheets/C&C Druid Pets.pdf