When you marry and your spouse has a dog.

Common uses: "going to pet my in-law" "my in-law is a bitch" "my in-law wont stop humping my leg"

Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.

The dog owned by your spouse's family is called your dog-in-law. (Plural - dogs-in-law)