Josh (4 year old): [Looking at book] I think that's a velociraptor or a compsagnathus [both correctly pronounced]. Me: Uhhhh, I don't know... [pretending to doubt him]. Josh: It has two fingers! [in an "oh HUH!" voice] Meaning, they have two claw-like appendages on their front legs, which identify them from other similar dinosaurs. SHEESH!