The Four Hoods and Great Dog — Susan Fromberg Schaeffer

A move to the country introduces Steven and June Hood to the kitten Foudini and the largest dog anybody has ever seen, two talking animals who are preparing a return visit to the world from which they originally came and decide to take the children with them.When the Hood family moves from Brooklyn to the country, young Steven and June find a puppy that grows to enormous heights, and a kitten, both of whom can talk and who lead the children to magical other worlds