It's an interesting article, but its use of "tool" is spurious. It appears in the title and is plunked down in front of us on the last line, but nowhere is the

It's an interesting article, but its use of "tool" is spurious. It appears in the title and is plunked down in front of us on the last line, but nowhere is the case made that dogs' greater social acceptance of humans amounts to anything like tool use. Great article; too bad about "tool."