Categorize the following kinds of animals
dog, parrot, spider
Mammal: Dog 

Bird: Parrot 

Arachnid: Spider
Complete the following task based on the instruction and optional input provided.### Instruction:
Categorize the following kinds of animals

### Input:
dog, parrot, spider

### Output:
Mammal: Dog 

Bird: Parrot 

Arachnid: Spider