For some reason, the kitties run around with their fluffy tails straight up in the air, like they're advertising a new duster.
Bunny even feels like her tail doesn't get enough attention at times, and so wafts it in people's faces every now and then.
On this particular occasion, she was also very interested in the science project, and decided to supervise.
Pixie wanted to get in on the action, too, which of course led to...
What else? Kitty wrestling!
Inspecting for injuries