I've had 2 Pebblebee 1 when they first came out and 1 more recently. I've unfortunately never had luck with either. If you are reading this ditch them and try the ugreen tracker, it is world's better in my opinion.
Frame of reference the apple Airtags work ok also but won't work with android, the ugreen work with both my android and my wife's iPhone.
I could not find a way to mount the Clip 5 to my dogs collar. And I could not find a holder on the internet. I have a 15 lb dog and the Clip 5 is too big and floppy to hang on the dog collar.
I found some heat shrink tubing and cut a piece. I slid the clip 5 and the collar through the sleeve. I used electrical tape to mask off the USB port and the clip point.
Important Note: Because the clip 5 is round, it will try to slip out of the tube as the heat shrinks down around it. Have some metal pliers or some metal clips ready to hold the clip 5 in place while the tube cools down. If you have never worked with heat shrink tubing or a heat gun ask for help with this task. Pick a spot on the collar that's near the heaviest point. Usually where the dog tag hangs.
It turned out great and sits flat and secure against the dog collar. The device works perfectly and you can clearly hear the beep tones and the button works too.
Can't find Pebblebee Tag anywhere anymore. Perfect form-factor, what I'm looking to put in my other bicycle.