A few days ago, they stumbled upon the chameleon, and when he tried to explain its camouflage abilities, she didn’t quite understand. So he decided to make her a pet color-changing chameleon robot.

When Henn opens Ember’s cage and prods him to climb onto a long stick, he “gets grumpy,” which Henn knows because the chameleon’s red bars get a little brighter. I keep envisioning the ...