katie,
this sounds a little dumb, but likely your best bet is getting some gumpaste and a picture of the animal in the pose you want and just start playing around. you'll be surprised at how good you will do. Don't worry about color - you do that later with food coloring and/or petal dust. Just use your basic tools and your hands and think of it as play-dough
I made a cake with squirrels for my son. I found this great website that sells marzipan figures. It might give you some ideas. HTH.
http://www.marzipanworld.com/acatalog/Marzipan_World_Animal_Themes_542.html
This is what I put on my son's cake:
I just made a cow cake with cows made from MMF. There are great directions at pastrywiz.com. They are step by step. I only saw directions for cows, not other farm animals. This will maybe get you started. I have my cow cake posted in my photo section. It was time consuming, but I thought they turned out okay. Good luck!
I did a search on this in cake central last night just to see what I could come up with. I am curious too as to how to make the figurines. I found where someone posted this site and I saved it to my favorites. Perhaps you might find something in here that would help.
http://www.sculpey.com/projects_figures.htm
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