Here's a few, Moni...

http://www.etsy.com/view_transaction.php?transaction_id=12767448 This is a sold pattern of stuffed koalas, but I'm sure you could get one from them.

http://dollmakersjourney.com/kangaroo.html I'm sure you could adapt this and make it larger, Moni. And it's FREE!

This one is adorable for a baby's room! http://www.funkyfriendsfactory.com/product/PT-KANGAROO.aspx

This book has a gator/croc in it- it's pretty cute! http://www.amazon.com/Toys-Sew-Patterns-Animals-Accessories/dp/0307345416 You can probably look at the book before buying it at a local bookstore, it's a current book.

Here is a link that might be useful: Koala sock doll