Dinosaurs left tracks of pee as big as a bathtub

The fossil record contains evidence of dinosaur poop. But it also turns out that we've got evidence of dinosaur pee, as well. Specifically, divots and splatters in preserved in rock, some as large as 10 feet long, 5 feet wide, and 5 inches deep. Suffice to say, you don't want to stand under a sauropod when they're doing their business.