The Sailor Dog by Margaret Wise Brown is a Little Golden Book classic, first published 1953. After the success of Mister Dog, Wise Brown and Garth Williams were paired by the publisher the following year.
The Sailor Dog is basically a Robinsonnade for the preschool set. The Robinsonnade is an adventure story which takes place in a static place, like an island. For more on that, see this post. And for more about the role of islands in storytelling see this one.