When i watched the first interlude, I spotted a dog on the bottom right. He was what looked like a golden retriever and had a green scarf. Now, dogs can hear noises from far away and a su-37 can definitely be heard from far away. The dog could have ran away before the plane hit the house. The dog could have ran away and be found by Rosa Cosette D'Elise, and she kept the dog. The dog could be the same as the dog from one of the trailers that can be seen with her.