One of the first scientifically confirmed ratters was "Hatch" a terrier and whippet dog crossbreed who spent his short life on the Mary Rose. The dog, named Hatch by researchers, was discovered in 1981 during the underwater excavation of the ship. Hatch's main duty was to kill rats on board the ship. Based on the DNA work performed on Hatch's teeth, he was a young adult male, 18–24 months old, with a brown coat. Hatch's skeleton is on display in the Mary Rose Museum in Portsmouth Historic Dockyard.