Lord of Thunder
Book 2 of the Beast Master series, originally published in 1962. This is a Fawcett Crest paperback, probably from the mid to late 1970s. Cover art is by Ken Barr.
Andre Norton Books
My Personal Collection.
Copyright 2007-2009 by Mike Grimm; copyright of cover images are held by their respective owners, which are used here for illustrative purposes only.