You already know that the Aeladil is a LAND animal, so you don't need to research the aquatic biomes (freshwater and oceans) This means that you only need to find information on the following biomes:
Taiga
Tundra
Tropical rain forest
Desert
Temperate grassland
Savannah
Temperate deciduous forest
Begin your research here. You may also use alternative sites, but these should be your main sources of information: Interactive Biome Video "Biomes of the World" (information and videos)