1. We saw a lot of interesting things. People use animals to save human life or for covert operations.
2. I also want to talk about horses. People use this animal for fast movement.
3 Yes, I think they can. Nobody can imagine whether a pigeon is sending a letter or just flying and if you are a spy and you have mines, you never know if delphine will neutralize it. But I think that this is not very good, I think that we should not use someone for the sake of our existence.