Please choose the correct ending to complete the given sentence: Walking the dog: A toy dog is walking on the floor. it

Ending1: begins getting a haircut on the floor. Ending2: has a sneaker put on and it is walking to the bathroom. Ending3: follows the toy dog, trying to catch it with its hands. Ending4: stops to look around back and forth.

Answer format: ending1/ending2/ending3/ending4