We are celebrating 35 years of the National Geographic Kids magazine!

The September 2010 issue of National Geographic Kids magazine marks the 35th anniversary of the magazine. To celebrate, every day in September we are going to show you an amazing, silly, or awesome feature on the NG Kids website, so be sure to come back to see all 35 Best Online Features.

1. Best NG Kids Covers Puzzler
See if you can solve the jigsaw or slide puzzles based on some of our awesome covers.

2. Best Pet Craft
Give your dog (or cat!) a comfy place to chill out with this pet bed.

3. Best Laugh Out Loud Video
These goats don’t run or yell when they’re startled–they faint instead!

4. Best Multi-Level Game
Explore the solar system as Nat and Geo in “Pluto’s Secret,” an out of this world multi-level adventure game.

5. Best Jokes
Stock up on jokes and make your friends giggle with this Just Joking interactive!

6. Best Global Adventure
Read about brothers Stefan and Tyler and their awesome adventure around the world.

7. Best Hands-On Exploration Blog
Relive the amazing adventures of the Hands-On Explorer expeditions to Australia and Peru. Plus, you can find out how to enter the 2011 Hands-On Explorer Challenge contest!

8. Best Science Experiment
Ants keep track of where they are, where they’re going, and how to get there. Can you make an ant get lost? Find out when you try this experiment.

9. Best Recycling Game
Do you know the difference between recyclable stuff, compostable stuff, and trash? Try this recycling game and see how high you can score.

10. Best Gross-Out Video
How many spiders could you stand to have crawling all over you? Find out how many Tom had crawling on him (for 30 whole seconds)!

11. Best Earth-Friendly Craft
One easy and fun way to help the planet is to decorate a canvas bag. You or your parents can use your personalized bag while shopping instead of using plastic bags.

12. Best Whale Quiz
Get ready to bend your brain and answer these questions about the world’s biggest whale (make that the world’s biggest animal)!

13. Best Animal Profile
What’s this cuddly-looking creature? It’s a harp seal! Get the facts on this adorable animal in the Creature Feature.

14. Best Scary Treat
When you look at this snack, it feels like it’s looking back! Check out this activity to learn how to make your own eyeball deviled eggs.

15. Best Lightning Photos
See the awesome power of lightning in this photo gallery.

16. Best Silly Fill-In-the-Blank Story
Going back to school is always a little awkward, but in this story going back to school is the zaniest it’s ever been.

17. Best Animal Balancing Trick
Most cats aren’t too happy when they’re around lots of people, but Nicholas likes crowds just fine. He gets a great view of New York City from the top of his owner’s head!

18. Best Trivia Challenge
Do you think you know more trivia than their parents? Try this quiz, and then email a challenge to your mom or dad! (Or your brother, or your sister, or your friend…)

19. Best Ways to Help the Environment
It’s up to everyone to do what they can to help the environment. Check out these green tips for inspiration.

20. Best Creepy Video
Get a spider’s perspective in this video, where you’ll watch a jumping spider stalking a honeybee.

21. Best Way to Get to Know the NG Explorers
Meet National Geographic’s team of awesome explorers! Click the figures to learn more about what they do.

22. Best Pet Treat
Who doesn’t like snacks? Your dog or cat will go wild for these tasty treats.

23. Best Halloween Costume
Do you know what you’re going to be for Halloween yet? Try this awesome make-it-yourself spaghetti and meatballs costume!

24. Best Way to Travel for Free
Explore the world from your computer screen when you visit the National Geographic Kids People & Places area. Get facts about countries around the world and check out beautiful pictures.

25. Best Book Blog
Looking for a book to read? Find a new favorite on DogEared, featuring book reviews from real kids.

26. Best Water Adventure Game
Join Nat & Geo (and their monkey Gordo!) as they raft a raging river and explore an underwater shipwreck!

27. Best “Backpack”
Carrier crabs pick up whatever’s handy to use as defense, even if the closest thing is another animal!

28. Best Animal Custodian
Speaking of crabs, trapeziid crabs help keep coral reefs alive by keeping them clean!

29. Best Animal Reader
Willow the dog has an unusual talent: reading! When her owner holds up a card with a command on it, Willow does what the card says.

30. Best Place to Learn About Going Green
Get the scoop on all things green on the Green Scene blog.

31. Best Animal Invasion
The jellies are coming! Giant jellyfish are invading the Sea of Japan. Find out why.

32. Best Easy Snack
The next time you get tortilla chips, why not try making your own salsa? Pico de gallo is an easy (and tasty!) chip topping.

33. Best Big Cat Profile
Tigers are the biggest cats in the world! Get the facts on these fantastic felines in the Creature Feature.

34. Best Mystery Game
Who is buried in the ancient Egyptian tomb? Find the clues and solve the mystery.

35. Best Virtual World
Customize an animal character, explore, play minigames, and much much more in Animal Jam, a cool new virtual world from National Geographic.