Living under the same roof, seems to be acceptable for a husband, wife, three kids and a dog in A Parenting Guidebook:
Many families no longer consist of the stereotypical husband, wife,
three kids and a dog, all living under the same roof.
Families in general fit the description in Good Dog, Bad Dog, New and Revised:
You wouldn't do that to a baby and you shouldn't do it to a dog.
Bonding must involve the entire family, and that includes anyone
living under the same roof. Each person should be encouraged to develop his or her own separate relationshp with the dog. The more diverse the relationships the better.
In general, dog lovers seem just as attached to their canine children as their spouses and biological children, as suggested by the dialogue in the novel Dog Handling:
"He's called Felix. And I figured that while you had this thing about
dogs, about training them, well, while Felix was living under the same
roof as us then you wouldn't have to hound me so much."
One should be aware that dogs do not particularly enjoy living under the same roof as cats, as The Dog Bible suggests:
Cats and dogs are not natural enemies, but they aren't natural
friends, either. When living under the same roof, they are in
competition for food and water, territory and the affection of the people. If the two animals live together over several years, they come to an understanding and learn to respect the different issues that are important to each of them.
Your relationship with your dog is different than your relationship with your spouse, which would also be different than your relationship with your son, which would also be different than your relationship with you daughter. If you are ashamed of your dog, you might not want to document living under the same roof, but if you love it, why not let the whole world know?