From Dr. Kwane Stewart, CNN's Hero of the Year for 2023.

Mountains Beyond Mountains meets Tattoos On the Heart in this unforgettable, powerful, and stunningly-told memoir of a struggling veterinarian saving animals and humans on the streets of California - and how he discovered what bonds all living creatures.

Dr. Kwane Stewart was questioning his career as a veterinarian when he saw a homeless man with a flea-infested dog outside of a convenience store. In a moment of spontaneous generosity, he offered to examine the dog and treat him for free. It was the first step in a now nine-year journey that has taken Dr. Kwane from Skid Row to San Francisco and beyond to care for pets and their humans who are living on the streets.

In What It Takes to Save a Life, Dr. Kwane shows how our four-legged, feathered, scaled, and swimming family members—these dogs, cats, birds, reptiles, and other animals that live side by side with us—provide more than companionship. They offer essential love, hope, and a sense of security.

Written with striking honesty and rich detail, Dr. Kwane looks back on his childhood, how he discovered his appreciation for animals and his calling, and offers a frank assessment of the state of veterinary medicine today, where compassion fatigue, burnout, and suicide are facts of life. Full of warm and inspiring stories of human-animal relationships, this powerful and eye-opening book is a reminder that we are all members of a wider family. It is also a clarion call for each of us to help those in need—especially our most vulnerable brothers and sisters—and the animals who are their families. Wise and warm, Dr. Stewart's story is a reminder that one life can make an immeasurable difference.