Take the cat to the pet store for boarding before a business trip.

The shop owner said, "Don't worry, we send videos every day."
On the first day, I received a video of the cat eating canned food.
On the second day, the cat was sunbathing.
On the third day, the cat was fighting with another cat.
On the fourth day, the video showed a dog.
I called and asked, "Where is my cat?"
The shop owner said, "Oh, the dog from yesterday scared your cat away, and we haven't found it yet."
I asked, "Whose dog is the one in the video?"