We used to let dog (boxer) off lead when he was 7-12 months (we got him at 6 months as a rescue) then the fields were cut and he started to chase, mainly tiny birds. He then ran off twice before we decided to keep him on a lead.
Then I trained him to a whistle: at the dog trainer at home and at the secure field. But now I'm too nervous to try him in the field in case he runs off again.
However Tonight he escaped when it was dark, in to the woods at the back of our house. We got our shoes coats and torches so a good couple of minutes and then picked up the whistle. Blew it a few times and came he racing back in much to my amazement and delight!
So will he chase birds OR will he come back to the whistle in the fields?