Name an animal found in a given habitat.
Rivers
Animals commonly found in the rivers include the beaver, duck, otter, salmon, alligator, and the river dolphin.
Complete the following task based on the instruction and optional input provided.### Instruction:
Name an animal found in a given habitat.

### Input:
Rivers

### Output:
Animals commonly found in the rivers include the beaver, duck, otter, salmon, alligator, and the river dolphin.