It's difficult to pull away the guide dog from the family that carefully brought it up.
ご質問ありがとうございます。
「pull away」を覚えたいなら、下記の英文通りになります。
It's difficult to pull away the guide dog from the family that carefully brought it up.
It's difficult → 辛い
to pull away the guide dog from the family → 盲導犬を家族から引き離す
that carefully brought it up → 大切に育って貰った
ご参考になれば幸いです。