Classify the following 3 animals into a correct category: Elephant, Octopus, and Bat.
Animal Classification:

Elephant: Mammal 
Octopus: Mollusk 
Bat: Mammal
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify the following 3 animals into a correct category: Elephant, Octopus, and Bat.

### Output:
Animal Classification:

Elephant: Mammal 
Octopus: Mollusk 
Bat: Mammal