Make your way to a central location in the historic Colaba neighborhood, and meet a local guide for the walk to Crawford Market, which was built in the days of the British Raj. See displays of fresh fruits and vegetables, then tour the pet market where songbirds are sold.
Continue to Mangaldas market to browse textiles and clothing; this is an especially good place to shop for silk fabrics and souvenirs. The next stops are Kalbadevi and Khau Galli markets, where dingy, narrow alleyways hide some of the best street food in Mumbai. Find the best places to try dosas, sandwiches, savory bhelpuri, and pav bhaji, a thick curry served with soft bread.
Before visiting the next market, stop by Mumbadevi temple, whose saffron-clad sadhus pray with vermillion and ash on their foreheads, and learn the story of the Goddess Mumba, the local incarnation of Devi. The last market of the day is the vibrant Flower Galli market, which overflows with chrysanthemums, jasmine, roses, and marigolds.
After Flower Galli, continue to the Bombay Panjrapole that was established in 1834 as an animal shelter, and now houses and cares for 1,800 animals. If desired, you can purchase fresh greens to feed the animals, and see some of the cows that provide milk to support the shelter. This 3-hour tour concludes at the original departure point.