It's the weather. Mine go out pee, come in, warm up, go back out to poop. I've been just waiting for them to ask, then they run out and run back in. I also take a towel and rub their legs and feet.
Misty- Samoyed Mix
Tannor- Golden Retriever CGC
Robyn- German Shepherd CGC, TC
Midnite-German Shepherd CGC, TC
Brennan- Golden Retriever CGC