“This is an aye-aye!” says Boris the Zoo Friend, as it scurries up his arm. “It’s an endangered lemur–whoa!–capable of some spectacular acrobatic feats.”

“It’s a mankiller,” pipes up Alava.

“You’ve said that about every animal the class has met today, Alava,” chides Boris, “and I promise, Willikins here eats bugs! It knocks on trees to find–”

“I’m really serious this time,” says Alava, but she’s drowned out by laughter as the aye-aye raps sharply on Boris’s head.

“That’s right, little guy,” he laughs, “it’s hollow!” Then Willikins inserts its four-inch middle finger into his ear.