Tied up dogs become aggressive because of being paradoxically terrified all the time.
They’re not stupid; they *know* they’re helpless targets for any manner of threat to their life.
They know they’re trapped.
All animals operate on ‘flight or fight’.
When you remove the “flight” choice with chain, only “fight” is left...so they do.
That makes astounding sense!
Until now, my feelings about NOT tying up dogs have been rather abstract.
Well said. :)