Sure but I learned that hard way when I got the sealed probable cause statement of my warrant, the detective claimed an unnamed officer claimed an unnamed dog alerted and that set off that intermediate standard.

So in practice there is nothing needed. Because it is impossible to challenge 3rd order interspecies anonymous hearsay.

Dogs fill several functions in that context, not that different from how lie detectors are used to put on a good show actually.

They can easily make up lots of reasons that will count as reasonable suspicion or probably cause.