Step 1 : Introduction to the question "3. He travelled to Oz in a house carried by a twister, but returned to Kansas before returning to Oz by crossing the Deadly Desert in a sand-boat. What is the name of Dorothy's beloved dog, who appears in a number of books in L. Frank Baum's "Oz" series"?"
...1. Billina 2. Toto 3. Eureka 4. Tip The first visit is familiar to most either from the book "The Wonderful Wizard of Oz" (first published in 1900) or from the 1939 movie, starring Judy Garland, based on it. He returns with Dorothy in the fifth book in the series, "The Road to Oz" (1909), and settles there permanently (along with Dorothy, Uncle Henry and Auntie Em) in "The Emerald City of Oz" (1910). In "Tik-Tok of Oz" (1914) it is revealed that he can talk when in Oz, as can other animals, but usually chooses not to do so. Toto's breed is a matter of some uncertainty. He was originally described as "a little black dog, with long silky hair and small black eyes that twinkled merrily on either side of his funny, wee nose", a description that could fit a number of breeds. From the original illustrations, most have concluded that he was either a Cairn terrier or a Yorkshire terrier. In some books he seems to have transformed into a Boston terrier, a breed whose looks differ markedly from the original. In the movie, he was played by Terry, a female Cairn terrier. Billina the hen was Dorothy's traveling companion in "Ozma of Oz" (1907); Eureka the cat accompanied her in "Dorothy and the Wizard in Oz" (1908); the boy Tip, central character of "The Marvellous Land of Oz" (1904) turns out to be a girl named Ozma, the rightful ruler of Oz.