Origin of "bone to pick"

VOA Learning Englishと言うサイトに "bone to pick" の由来の説明が次の様に書かれていました。
This phrase comes from the 16th-century. Imagine, if you will, two dogs fighting over a bone. The “bone” is the contentious issue that two people fight over. “Contentious” describes something that is likely to cause people to argue or disagree.

犬の骨争いが元なのですね。