Jane, a dog can bark to its hearts content for a long time. Really depends on its intentions and volume.
Thankfully the breed I have are not big barkers, but for most dogs, barking is as hard to do for them as speaking is for us.

If however it is distressed and has no water etc, then after some time it can start to hurt them... But like most dog injuries, it wont stop them.

Really do hope its resolved amicably

Deffo a good idea to let them hear from your place, or play them a recording.

This post was last modified: 10-04-2014 03:33 PM by Snazy.