In the Netherlands is very common to keep dogs as pets. In turkey they use the dogs for security. Once the dogs are not needed anymore they will be dropped on the streets. Most of the time they are not sterilized. Every year there are more and more strays on the streets.
The government is trying to limit new stray dogs but not with enough money or attention. Therefor it takes to long to sterilize them and new strays get born every day.
Living a tough life with in the winters barly food and warmth and in the summer no water and a lot of ticks