WHY do they do that?! Toto NEVER does things like that at home ... but let her go to my Mom's house and she promptly does a "doodle" on her living room carpet and as soon as she finds the Border Collie's frisbee ... climbs right in it and pees!!!
After those "statements" she always goes to her wee wee pad just like she was at home!! It's like she has to let them know that "Toto's IN the house"!!!