Some cool video of animals images:
The A B C's of animals, applied to a cow
Image by aaipodpics
Jack Hamm explains in his book "How To Draw Animals" how a generic four legged animal can be constructed from a bunch of rectangles, and how you can use that technique to draw any animal in side view (profile).
Here I've used a photo of a cow and applied the rectangles to it, before dealing with the exact shape of the animal. Getting the parts in the correct positions and at the right size is always a problem when you're not familiar with a subject. Having a method to roughly estimate the structure of an animal is a handy trick to have in your bag of artist's tricks.
This drawing was recorded as a video on my iPod Touch and uploaded to my Shorties Ustream channel.
