1. Third Hokage: Enma The Third Hokage's summoning animal is Enma, known as the "strongest summoning animal" by Orochimaru. 

2. Fourth Hokage: Gamabunta Gamabunta, the summoning animal of the Fourth Hokage, Minato Namikaze, is a giant toad with advanced fire and water release ninjutsu.

3. Fifth Hokage: Katsuyu Katsuyu, the summoning animal of the Fifth Hokage, Tsunade, is a large slug. Only a fraction of Katsuyu can be summoned, even when teamed up with Tsunade and Sakura. 

4. (Temporary) Sixth Hokage: Dream Moth During Pain's attack on Konoha, Danzo was selected as the initial Sixth Hokage. His summoning animal was Dream Moth, a creature with impressive wind release abilities.

5. Sixth Hokage: Kakashi After the Fourth Great Ninja War, Kakashi became the Sixth Hokage. However, his summoning animal, the Eight-Ninja Hounds, is not skilled in combat. 

6. Seventh Hokage: Gamakichi Naruto, the Seventh Hokage, has a variety of summoning animals, including the toads from Myoboku Mountain.