Where does “介助犬” come from?

介助犬 (Japanese) comes from Japanese 犬, from Old Japanese いぬ.

介助犬 (Japanese): mobility dog, mobility assistance dog

Definitions

  1. mobility dog, mobility assistance dog

Ancestry of “介助犬”, step by step

介助犬 traces back through two separate lines of ancestry.

via Japanese 犬

StepLanguageWordMeaning
1Japanese犬dog; canine; one who is loyal; a spy
2Old Japaneseいぬ—

via Japanese 介助

StepLanguageWordMeaning
1Japanese介助help
Every word from Old Japanese いぬ →Every word from Japanese 犬 →