【Watch My Wifes Sister 5 Online】

This year's Halloween Google Doodle is Watch My Wifes Sister 5 Onlinea real hoot, especially if you like animals.

Google's annual tradition continues with another fun, festive, and interactive homepage doodle just in time for Oct. 31. But this year, Google got some guidance from the World Wildlife Fund (WWF).

To make its "trick or treat" game extra exciting, the Google Doodle allows users to click on different doors, which reveal a variety of Halloween-related animals. Once you choose a door you have the option to "trick" or "treat." In this case, a "trick" will give you an exciting animal animation, complete with sound. And a "treat" will show you some interesting facts about the animal you selected.

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Here's a sneak peek at the semi-spooky/mostly cute jaguar, owl, octopus, tarantula, and wolf friends that Google's Doodle has in store.

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The Halloween Doodle is set to run in 40 countries, and will be live for 24 hours in each, starting in the U.S. Thursday, October 31 at midnight ET.

You can check out past Halloween Google Doodles here to keep the holiday fun going.

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