My only comment will be that I would imagine that the Doodle breed puppies will be from a commercially geared program. Likely dealing with situations where there are more litters available/bred/raised at a time then say a good, grounded purebred litter. Commercially bred puppies could be raised in big pens full of shaving etc with no alternatives to pee/poop area and due to numbers of litters/puppies, aren't given the same environment to start to learn to house break themselves. I had a 4 week old Lab puppy wake me up SCREAMING at 5am as he wanted out of the combination box/expen-ex area to poop outside that enclosure. Nope, didn't want the paper thank you but please take me out of here entirely. Now do you think a commercial program has that sort of set up or cares where the pup goes? Nope, so long as they keep clean. I just imagine early imprinting on housetraining, or rather lack there of, means many Doodles and other for profit raised Poodle X's are a bugger to housetrain.