buterfly -http://hubpages.com/hub/japanese-butterfly-art
horse -
click
praying mantis - In eastern countries, the praying mantis has always been a symbol of courage and cruelty. In medieval Japan, they were depicted on the handles of Samurai swords. Modern Japanese believe that if a person sees a mantis, it foreshadows his death. (according to this article -http://mysteries24.com/n4-29999-Superstitions_about_praying_mantises)
snake -In Japan, the serpent is especially associated with the syncretic Benzaiten, the goddess of everything that flows: water, words, and music. She is the main deity of the shrines on islands as Enoshima and Chikubushima and is often represented with a snake coiled around the rock on which she is seated. In Japanese legend, the snake is also a symbol of a woman's jealousy: in the famous story about Kiyohime, the jealous woman transforms herself into a serpent and coils around the temple bell in which her fugitive lover has hidden, literally "frying" him with her passion.
Perhaps because of the "Naga treasures," the snake is also associated with money and profit - on New year cards we often find it accompanied by gold coins. (according to this -
http://www.japannavigator.com/2013/0...e-customs.html )
you can just google each and it will give you more stuff to read up.