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.
It is one of the few venomous mammals, the male platypus having a spur on the hind foot that delivers a venom capable of causing severe pain to humans.hile both male and female platypuses are born with ankle spurs, only the male's spurs produce venom, composed largely of defensin-like proteins (DLPs), three of which are unique to the platypus. The DLPs are produced by the immune system of the platypus.