Doug Hexter is the CEO and Founder of WoofTrax, the walk for a dog app that supports animal organizations with every step. Since launching the app, dog walkers have contributed over 50 million walks supporting over 8,500 animal shelters. This episode is part of a 4-part miniseries called PubCast, a series that explores the stories of website creators and app developers who've turned their passions into digital businesses. Hear from founders about how they got started, their challenges growing, and their tips for entrepreneurs. To provide feedback about the PubCast series of podcast episodes, visit https://g.co/talksatgoogle/pubcast. Interested in learning how you can grow your digital business with Google? Learn more about AdSense, Ad Manager, and AdMob solutions.