The Dr. Pou's Altar is where you use Shadow Essences to summon special pets that aren't obtainable using the other Altars.
How to useEdit
To use Dr. Pou's Altar you need to get 2000 Shadow Essences that are obtained by summoning pets using the other Altars, after obtaining 2000 Essences you are able to activate the Altar and for 25 hours you can use it to summon the special pets only available in this Altar.As for how to summon pets, it work the same way the other Altars do, for more information see the basic guide on how to summon here.
Dr. Pou's Altar Exclusive PetsEdit
Forest Elemental Centaurus
Black Pearl Cat