Publisher. A+E Networks. In Tokyo, Commodore Matthew Calbraith Perry, representing the U.S. government, signs the Treaty of Kanagawa with the Japanese government, opening the ports of Shimoda and Hakodate to American trade and permitting the establishment of a U.S. consulate in Japan.
A platypus is often called a queer animal because of its  appearance. The platypus looks a little like an otter with the bill  of a duck and webbed feet, so it's a mixture o â¦ f different animals  traits, seemingly. platypus is often called a queer animal because of its  appearance. The platypus looks a little like an otter with the bill  of a duck and webbed feet, so it's a mixture o â¦ f different animals  traits, seemingly.
The platypus is classified among egg-laying mammals-monotremes. Male platypuses have a poison apparatus on their hind legs. There are poison glands in the thighs and a hollow spur near the heel. The sting is not dangerous to humans, but is extremely painful and causes rapid swelling in the stung area.It may also cause increased temperature. For smaller mammals, like dogs, the sting can be fatal. The purpose of the platypus's poison system has not been satisfactorily explained.he sting is not dangerous to humans, but is extremely painful and causes rapid swelling in the stung area. It may also cause increased temperature. For smaller mammals, like dogs, the sting can be fatal. The purpose of the platypus's poison system has not been satisfactorily explained.