Anyone else have a kid obsessed with dinosaurs?

My 4yo literally only wants dinosaur books, dinosaur toys, dinosaur everything. We went to the natural history museum 6 times last year. I've learned way more about triceratops than I ever wanted to know. But honestly? He's so into learning about this stuff that I don't even mind. Just funny how specific kids' obsessions can get. How long does this phase usually last lmao