Simple but cute. These animal papercrafts are perfect for kids and beginners. It's really unfortunate that we can't download the beautiful cat models but there are enough models for you to enjoy like the penguin, shark, fox, rabbit, wild boar and a whale. There's a dragon too. Each model comes with a page of parts and another for instructions.
SD Animal Paper Models-Japanese English(Google Translator)-more models here
P.S. I can't open my email for the past week. I'm gonna reply as soon as I read them.
Ryo Tokisato. the designer of this site, has a annex site with more paper designs.
http://www.geocities.jp/pepakuratoki/pepag1.htm