Snooping through the css I found this cute hyper-rabbit http://fiber.google.com/static/img/cities/rabbit.png

Edit:

Other interesting sprites:

* http://fiber.google.com/static/img/sprite-devices.png

* http://fiber.google.com/static/img/sprite-networks.png

also, tooltip:

http://fiber.google.com/static/img/cities/business_address_e...

Last edit : curl > grep > sed > jsfiddle:

http://jsfiddle.net/LyHbH/embedded/result/