In what country were the first assistance dogs developed in the 1920s as guide dogs for veterans who lost their sight during World War 1?

http://www.muhlenberg.edu/studorgs/companion/ccfaqhistory.html

What word appeared in the title of the first 3 Beatles songs that topped the British charts?

You?

The first assistance dogs, specifically guide dogs for people who are blind or visually impaired, were developed in Germany in the 1920s. They were initially trained in response to the needs of veterans who lost their sight during World War I. The organization responsible for this groundbreaking work was called "The Institute for the Education of the Blind" in Potsdam, Germany. The goal was to provide support and greater independence for visually impaired individuals by training dogs to guide them safely through their daily lives. These early guide dogs paved the way for the development of assistance dog programs worldwide. Would you like to know more about assistance dogs or any other related topic?