Several significant dinosaur discoveries were made in 2025, including the finding of preserved blood vessels and well-preserved dinosaur "mummies" with skin and hooves. These discoveries have provided new insights into the appearance and biology of dinosaurs, although the exact ranking and details of the findings vary across reports. The discoveries also include a large collection of dinosaur footprints and swim tracks found in South America, as well as the discovery of organic molecules in 66-million-year-old dinosaur bones.