A large amphibian and predator in the coldest of areas. In Spirits of the Ice Forest.
A very large amphibian similar to a salamander, Koolasuchus was a very effective predator in the water. It could ambush and strike at amazing speed however it had extremely short legs so walking on land was very hard for it.
During the episode it ate a Leaellynasaura and migrated towards it's home.