Joseph Christian Leyendecker was born in 1874 in Germany, and died in 1951 is the U.S. His work preceded that of Norman Rockwell (born in 1894, died in 1978). Rockwell was inspired by Leyendecker, and friends with him. He was even a pallbearer at Leyendecker's funeral.
Along with influencing Norman Rockwell, Leyendecker is also credited with inspiring the graphics in the computer game The Dagger of Amon Ra and the character designs for Team Fortress 2. His clients included the Kellogg Company, Palmolive Soap, Procter & Gamble, and the U.S. Army, Marines, and Navy.
. That knowledge came in handy as I sat down to begin research on the more than 100 dogs listed on BestDogBreedInfo.com. I learned a lot of cool new stuff, too, some of which gave me ideas for artwork.
! It's a guide to success for artists in the digital age. The tips aren't specific to any one field of art, and no art practice of any kind is required. It isn't a small book, or a really big one. It has a lot of information, but I tried to present it all in a concise sort of way. Here's the description I wrote for Amazon:
by Ken Hultgren. This guy used to be an animator for Disney, and it shows. He can draw all sorts of animals, in all sorts of poses, completely from imagination. And he does so with a realistic style. This book is a great guide to how to make your animals look like they actually have bone and muscle, and is very helpful when trying to create a dynamic pose. The caricatures are cute, too, but in an outdated, old Disney sort of way.
by David Colman. I mentioned this book before, but I'm mentioning it again here because it is so helpful. It has some great tips on how to learn to draw animals from imagination, and wonderful advice on designing interesting animal characters. It's also a great book because of all the awesome drawings that you can analyze and study.
by Jessica "NeonDragon" Peffer. This is my go-to book on dragon drawing. Unlike other dragon books that just show you a bunch of random (yet awesome) pictures, and then show you how to go step by step through a few illustrations, this book shows you how to make a dragon. It explains dragon anatomy, different foot, wing, head, horn, and eye types. And more importantly, it discusses how to draw dragons from different directions. The end of the book also discusses how to draw a few fantasy creatures. All in all, it's a great guide to learning how to draw your own dragon in your own poses.
by Steve Miller (with other awesome artists). This is one of my all-time favorite how to draw books. It's actually what got me interested in anthropomorphic animals beyond the usual cartoony ones and werewolves. It's full of the work of many different artists, with many different styles (though it generally has a Marvel sort of comic book style). It explains anthro anatomy, posing, and character design. It's the best how to draw anthro book I've come across.
and 
(I've got the older version of this one) both by Brenda Hoddinott. Despite their somewhat mocking titles, the Idiot's and Dummies line of books are actually very helpful. These books were some of my most important teachers as far as my pencil drawing skills go. I learned many shading techniques from them, and got most of my people drawing skills from them as well (the Dummies book covers drawing people, too).
by Norman Adams and Joe Singer. This book was very helpful to me when I was a beginning animal artist. It discusses what types of shapes to use in the blocking stages of your drawing and covers animal anatomy. I mostly used it as a skeleton and muscle guide, because there are some great side view anatomy drawings of many different animals. I found the shading demonstrations to be too short to be helpful (they go from lineart, to base shading, to magically beautiful finished drawing), so this book is most valuable when approached from an anatomy perspective.
by Doug Lindstrand. This was another book that helped me a lot as a beginner. While "Drawing Animals" is a great anatomy book and not a great how to shade book, this one is a great how to shade book and a poor anatomy book. It has you drawing various types of ovals and refining them into recognizable animal forms, without much though given to bones or muscles. However, it does an awesome job of describing how to draw details and is excellent at describing how to shade fur. So if you combine this book with "Drawing Animals" you've got some good information on how to be a graphite animal artist.
books by Tadashi Ozawa. Surprisingly, when I first started out (before I got online with my art) I was a manga/anime style artist. I don't think I actually made much original art in that style, I mostly redrew stuff from manga, but it was with this style, and these books, that I got my first taste of being an artist. I never really liked the style of the other how to draw manga/anime books I came across, which is why this is the only series I recommend in that style. They are great at showing you how to make your own characters, poses, and facial expressions. I especially like how the books focus on character continuity from different poses.