Meaning of go to the dogs

1. The once prestigious school has really gone to the dogs since the new principal took over.
2. Our neighborhood used to be peaceful and well-kept, but now it's really gone to the dogs.
3. The company's reputation has gone to the dogs after the scandal broke out.
4. I can't believe how much this city has gone to the dogs since I moved away.
5. The economy has really gone to the dogs in recent years.
6. The quality of this restaurant has gone to the dogs ever since they changed ownership.
7. The park used to be a nice place to relax, but now it's gone to the dogs with all the litter and vandalism.
8. The country's political system has gone to the dogs with all the corruption and scandals.
9. My favorite TV show has really gone to the dogs in the latest season.
10. The once thriving downtown area has gone to the dogs with all the empty storefronts and crime.