Strange Animals I Have Known Raymond Ditmars Vintage 1931 HC Wildlife Nature VG.
Binding outside shows some wear as well as a few early pages near the spine.
Possibly a leather or reptile skin cover?
Curator of the NEW YORK ZOO - Dr. Raymond Ditmars author. Lots of illustrations.
Cover has a great look for a book about animals.
Please inspect and enlarge all photos as they are an important part of the description.