Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Identify the most likely cause of given scenario.

### Input:
The pack of dogs is barking at the cat.

### Response:
The most likely cause of the pack of dogs barking at the cat is fear or aggression from the dogs towards the cat, or the cat's presence triggering a defensive or territorial reaction from the dogs.