オサンポ take a walk - 犬三昧 dogs

ドナタサンをお待ちカナ？と
思ッテイタラ、
おばあさまデシタ。
お買い物ツイデのオサンポ？
オサンポついでのお買い物？

I saw the dog who seemed to wait for
someone.
The old woman was the owner of the
dog.
They were shopping then went for a
walk?
Or, they went for a walk then
shopping?