The forest map, newly colored to describe borders, shows the ThunderClan/RiverClan border at the river, giving ThunderClan one of the banks of the river, when the books place that border at the treeline.
The books feature includes section on different warriors book arcs. When you click on a book, it leads you to that book's HarperCollins page, where there is a browse inside feature.
Meet Erin Hunter
This section includes short introductions Erin Hunter, of each of the 4 Erins themselves; Kate, Cherith, Vicky, and Tui.
There is a form that can be filled out to send a Warriors themed E-card to someone by e-mail.
Customizations of the E-card include:
Font colors and backgrounds
Choice of book and surrounding scene
Heading and message to recipient
A section to put in e-mail information for sending
This site includes a form to sign up for a Warriors newsletter.
There is a warrior cats memory game on the site, and it depicts scenes from covers of the German Warriors books. 
This site has a downloads section, in which the following items can be downloaded: 
Warriors cats cards
This site includes a Frequently Asked Questions section, which is regularly updated. It had an email listed that can be used to ask a question to Beltz. This also lists the website's Facebook page. 
A site devoted to getting kids to read, and getting kids to help younger kids learn to read. A few features are two short stories, Spottedleaf's Honest Answer, and one about Tigerstar, and what a great warrior he was. It also has crosswords, word searches, and other small things. It includes a "reading challenge" to become a "reading warrior." However, the site is currently shut down.
This activity is similar to Consult StarClan for your Warrior Name, except that you take a quiz, and the answers will result in the warriors "clan" where you would belong in. The possible clans that you can be in are ThunderClan, ShadowClan, WindClan, or RiverClan.Go here to take the quiz!
Decorate a Sign to Mark Your Territory
In this activity, you choose a certain place where you will read in peace and comfort.
When you've chosen the spot, you print out a reading warrior sign, from here, and once you've printed it out, you can decorate it. Then you can hang up the sign in your "special territory", so others know that you're a reading warrior.
Create Your Own Reading Warriors Journal
Print out a Warriors reading journal template here, and then color it in and personalize it.
A more colorful version of the official Harper Collins site; for children. This is the place to go to find First Look offers and suchlike for the Warriors Series, along with summaries and browse insides of most of the books.
The online home of Kate. Features a section devoted to warriors that includes things like Frequently Asked Questions, and the Occasionally Asked Questions (which update weekly). Kate Cary calls the Warriors part of her site "BlogClan."
The Warriors section of her site includes polls, her blog (BlogClan), a short bio about Kate, and fanfiction. People may leave comments on her website. She now calls herself Cakestar there because of what a fan posted.