Effectivness Best yield from left to right.

Tier 1
Chicken - Berries
Monkey - Berries
Parrot - Hardtack, or Berries
Rabbit - Carrots, or Berries
Sheep - Flowers, or Berries

Tier 2
Bear - Honey, Vegetables, Fruits or Berries
Cow/Bull - Rushes, Fronds, Vegetables, Fruits, or Berries
Crow - Worms, Fruits, or Berries
Horse - Sugarcane, Vegetables, Fruits, or Berries
Ostrich - Chili, Vegetables, Fruits, or Berries
Penguin - Prime Fish Meat, or Fish Meat
Pig - Maize, Vegetables, Fruits, or Berries
Seagull - Prime Fish Meat, or Fish Meat
Vulture - Spoiled Meat, or Worms
Wolf - Prime Animal Meat, Bones, or other Meats

Tier 3
Elephant - Wheat, Vegetables, or Fruits
Giraffe - Beets, Vegetables, or Fruits
Lion - Prime Animal Meat, or other Meats
Rhino - Turnip, Vegetables, or Fruits
Tiger - Prime Animal Meat, or other Meats