How to Draw Animals – eHow.com :

“Graduate to having a point of view of POV. This means choosing a %u201Cdisappearing point%u201D or horizon that can help you define the 3-D shape of your animal in space, even if it still leans toward cartoonish in appearance. STEP 4: Progressing into more detail and realism, a knowledge of basic anatomy becomes, at first, useful and soon requisite. Buy a drawing book rather than an anatomy book for an overview of what you need to know.”