Click on a thumbnail to go to Google Books.
Star Beast (original 1954; edition 1987)
The Star Beast by Robert A. Heinlein (1954)
References to this work on external resources.
Wikipedia in English
Amazon.com Product Description (ISBN 0345350596, Mass Market Paperback)Lummox had been the Stuart family pet for years. Though far from cuddly and rather large, it had always been obedient and docile. Except, that is, for the time it had eaten the secondhand Buick . . .
But now, all of a sudden and without explanation, Lummox had begun chomping down on a variety of things -- not least, a very mean dog and a cage of virtually indestructible steel. Incredible!
John Thomas and Lummox were soon in awfully hot water, and they didn't know how to get out. And neither one really understood just how bad things were -- or how bad the situation could get -- until some space voyagers appeared and turned a far-from-ordinary family problem into an extraordinary confrontation.
(retrieved from Amazon Thu, 12 Mar 2015 18:08:07 -0400)
A young boy believes he and his ancestors have been raising an extra-terrestrial pet for several generations, when actually the beast has been raising them. When the beast must be returned to his native planet, he insists on taking his human "pet" with him.
(summary from another edition)
Is this you?
Become a LibraryThing Author.