All dogs go to heaven?

Over the Thanksgiving weekend we are dog sitting for friends. Cassie is very gentle and easy-going. BB and Cassie have taken to each other. Cassie tries to eat her food, but other than that they get along. BB has decided that Cassie needs to be a party of all family activities at home. When we asked Cassie if she needed to go potty BB ran to the bathroom and started calling out "Cassie-dog, potty come on". Cassie has also been required by BB to join in family prayers before bed. So while Cassie has been here she has gotten a little bit of religion in her.