Dogs can do lots of things and they can be our good friends. There's a black-and-white dog in Georgia, the US. His name is Kupata and he lives next to a park (公园).
It's important for people to follow traffic (交通) rules, but not everyone can do it. To help kids cross the street (街) near the park safely, Kupata comes to the street every day. When cars cross by, Kupata isn't happy and "asks" them to stop. Kupata loves his job very much. Sometimes, he works there for an hour to make sure that kids can cross the street safely.
After working, Kupata goes to the park to play with kids. Kupata loves playing with them and the kids are happy to have a nice friend like Kupata.
Now, many people know Kupata. Some of them come to see Kupata and take photos with him. Kupata is always happy about that.