Lost Collar

I took CoCo to the Parley's Hollow unofficial off leash area yesterday.

She was doing a pretty good job not running ahead. We we were about 4/5th of the way to the culvert, she ran ahead. Uncharacteristically, she did not come back when I called. I called for about 4 minutes, and she came back ... without her collar.

So, now I have a strange mystery. What happened to her in those minutes that caused her to lose her collar. Did she get in a tussle with another dog? Did she meet a human that took her collar? Did she crawl under a bush and get the collar snarled in a branch? Does she know some secret collar escape trick, and waited for the opportunity to escape?

I looked for about twenty minutes for the collar but could not find it.

Fortunately, I still have the bright purple collar that you see in the picture to the right. I am not sure if I will have to replace the rabies shot tag.