Clicking jaw

[Suzy~Q]

I have a Boxer Dog who has recently developed a clicking jaw - can anyone tell me what might have caused it and what can be done about it? I haven't taken him to the vets yet as it doesn't seem to be bothering him at all, and he's quite happy (in fact more than happy!) for me to massage his jaw for him.

[ELVIS68]

Was his last fight rough?

Sorry couldn`t resist that one, try searching on Google for it ,apparently it`s common when they yawn

[Suzy~Q]

Thanks Elvis 68 - there's always one, isn't there? :-)
I did 'Google it', that's how I found 'answerbank', but couldn't find anything helpful, although I may not have worded my question clearly. It does happen when he yawns ... which he does frequently, but I'm not sure if it's to relieve any stiffness in his jaw, or just because he's very tired!