 Thank you so much for having me. We also very much want to hear from you this hour. Have you ever seen an animal grieving? And what did that do to make you realize they were distressed over a death? What did they do? What was their behavior that clued you into that? You can email us 1A at WAMU.org. All right, Professor Monceau, let's start with just some of the basics. What does it mean to grieve if you're an animal like a human or a crow or even a cat?