I came across this site a few weeks ago where you can get a free poster, free issue and 24 free stickers. I oredered the subscription for my niece. The site is made for kids up to about the age of 12. It even has cool animal music playing in the background.
It has teaching units available to for teachers. Just like Zoobooks, Zootles is full of animal fun. And Zootles is written to be shared with young children: pre-readers and beginning readers. You can pay right away or it has the bill me later option too.
Just thought I would share this with everyone!