 Twenty-five Pacific lamprey moved in this week. The ancient fish predates dinosaurs and even trees. Guests can see the lamprey in the Cascade Stream and Ponds section of the Great Northwest area. They're often suctioned onto the glass, showing their sucker-like mouths and rings of sharp yellow teeth. The lampreys stay at the zoo through the winter and are transported to tributaries of the Upper Columbia and Snake Rivers once they're ready to spawn. I'm Mark Mayfield.