Every animal shelter adoption is two rescues at once: a pet gets a home, and a person gets a best friend. That’s kindness that pays itself back, and psychology proves it. In a Washington State University study, just 10 minutes of petting a dog or cat significantly lowered the stress hormone cortisol. Now imagine a lifetime of it. These before-and-after pet adoption photos follow a rescue dog, a rescue cat and a tiny puppy from the Humane Society to the couch, the bed and the backyard. They prove that animal welfare is more than a cause. It’s compassion you can see, and happiness you can hold.