I remember frequently checking this book out from my grade school library; it was hardcover, no dust jacket; limited to mammals (worldwide species). It was a ‘tall’ sized book and may have had a pinstripe or harlequin design, on the front cover was an oval/circle template with jungle animals. (I do remember a giraffe). The inner illustrations were not photos, but looked painted/drawn. It looked like an old book, maybe from the ‘40s-‘50s?