No, Endangered Species was an expansion pack for ZT1 (like the Mexican pack that had the Mexican Wolf), it included the Panda, the Black Leopard, and the other regular zoo animals that need to be researched.
When Complete Collection was released, it included the original expansion packs for ZT1 in the ZT1 filter.
in Complete Collection, Dino Digs and Marine Mania were kept filterable from the original ZT1 because they each required different fences from the original.
:)