Leonard

"The cat that Olive rescues from a flood has a secret: he's not really a cat at all, but an alien who crashed to Earth. The cat, whom Olive names Leonard, was prepared to visit the planet as a human; but something went wrong. While Olive worries about whether she will have to move after her mom and her new boyfriend get back from their summer vacation, Leonard tries to figure out how to get from South Carolina to Yellowstone National Park, because if he's not there at the end of the month, he'll miss his ride home"--Provided by publisher.