Jan, if you still have the laptop can you not set up [a] microphone(s) to record the noise and then hand the evidence in? W10 has an app - Voice Recorder - that could do the job.
Put the lappy on an outside table and when the dogs start set the recorder going, when they stop pause it then when they start again set it recording. Make sure the lappy is on mains power so that it does not run out.
Recordings are kept in This PC > Documents > Sound recordings.
Give it a go....