Are there really "dogs ignore buns" and "cats ignore jiaozi" in Tianjin?

Because Goubuli steamed bread is so famous, modern Tianjin people immediately thought of using it to bring forth the old and bring forth the new. Therefore, there are not only dogs ignoring steamed buns, but also cats ignoring jiaozi. I said that steamed stuffed bun and jiaozi are both delicious food in the world. Although I don't remember eating this cat, even though it was jiaozi, when it comes to jiaozi, the experience of eating jiaozi in Shanghai is still vivid.