Tsundere is a pretty common term used in the anime community but there are still many who don't know what is actually means. Tsundere is actually a term derived by fans to classify a type of anime character that is becoming more common, usually a female lead.
Throughout the Corps more than 4,000-mile journey, Captains Lewis and Clark recorded 178 plants and 122 animals not previously known to science. Lewis recorded and pressed and preserved some 240 different plant species and brought them back to Washington, along with hundreds of animal and bird skins and skeletons.
The place they said lay up a small river [Lewis and Clark River], about 4 Miles on the South side; & about 15 Miles from this place [Tongue Point]. They had killed seven Elk; and had left 2 of the Men to take care of the meat hides & had also killed 5 deer.