DF and I adopted a beautiful girl from the Humane Society this weekend. She's a four year old mix, we're not sure of what but the shelter said probably St. Bernard, Great Pyrenees, and Bernese Mountain Dog. She was a transfer from a different shelter, and they had almost no information on her, including whether she was housetrained or not. A shelter volunteer said she probably was, she didn't really pee or poop in her run at the shelter, but she would go when she was out for a walk.
Since we've had her home, she hasn't pooped at all. Not that concerning, because she hasn't had much of an appetite. The shelter told us to expect this, between the stress and her kennel cough (poor baby). They said it'd be a few days before she's eating normally.
She's only peed once in two days, and it was on the kitchen floor, immediately after bringing her in from a long walk. She's had plenty to drink (she's emptied out her water bowl 2/2.5 times) and when she did pee it was an ALARMINGLY large amount.
All of the housetraining resources I've found online are all about positive reinforcement - when she pees outside, give her tons of praise and love and treats. The problem is, we can't even get her to go outside. We take her out 4-5 times a day, sometimes walks around the neighborhood and sometimes just letting her out at the off-leash dog park. I've also tried taking her to the indoor dog run at our building, it's a turf patch that TONS of the building dogs poop and pee on, so I'm sure it should smell like a bathroom place to her. At this point I'm not quite sure what to do. Any advice from dog owners out there?