Is this a physical trait which is indicative to all working dog pups in general(due to the mixture of the heritage of ACDS, Aussie Shepherds, et.al)?
I ask, as in the past our two ACDs had similar instances of pricking at about 12 weeks and remaining pricked (Tolkien) but in Jemma (who has more dingo in her than the norm we are told) she had the same instance as Lawson is now ,but at 13/14weeks.And her ears remained half pricked but she can rise them when there's something worthwhile to hear.
Just an observation.