Baby tiger doesnt work.

I've taken the liberty to test this myself. Your characters have to be VERY exact with what's written in that book. "Poo" or "Poop" should work, but "poo" or "poop" will not.

Examples:

 Spoiler

I've been having some real trouble getting "Hungry?" and "Food?" to work, though. It doesn't even respond most of the time and it's only worked once.