When your pets are home alone, are you sure they're really there? Really?Put yourself in the position of a beloved pet whose family has just installed a new pet door to the backyard. But instead of the backyard, there's a teeming city populated entirely by pets. The stores, restaurants, and theaters, the public transportation, the museums, parks, and municipal services are run by a huge assortment of well-dressed cats, dogs, rabbits, mice, hamsters, guinea pigs, ferrets, turtles, fish, and parrots. It is wonderful, but all too soon, it is time to go home. There is one very large problem -- how do you get there?In myriad, strikingly detailed and richly hued illustrations, sister-and-brother team Susanne Santoro Whayne and Christopher Santoro present a highly original, good- humored parallel universe for all young readers to visit, explore, enjoy, and then revisit.