Combine this sentence with the one following it into one: 
The dog barked loudly 
The cat meowed
The dog barked loudly, and the cat meowed.
Complete the following task based on the instruction and optional input provided.### Instruction:
Combine this sentence with the one following it into one: 
The dog barked loudly 
The cat meowed

### Output:
The dog barked loudly, and the cat meowed.