My dog and I both had the "full treatment" crossing into Canada last summer from Montana... it took about two hours, first hour I was detained while they ran a full background check on me, including checking with the FBI, which caused them concern because I had been recently finger-printed in the national database in order to gain additional security clearance at work. The dogs papers were also vigorously inspected, photo-copied and filed somewhere, however they never inspected the dog directly. Second hour was pretty much unpack everything from the RV, inspect it and repack it (though nothing was confiscated.)
Two weeks later coming back into the USA, through North Dakota, homeland security took about 10 min to look through the camper, and asked if the dog was "good", I replied "yes" and we were on our way.
2013 KZ Sportsmen Classic 200, 20 ft TT
2020 RAM 1500, 5.7 4x4, 8 speed