When you read the title of my blog post, are you thinking that there are openings named after animals? Some might say no, some say yes and the others aren`t sure. There are indeed openings named after animals.I`ll give you one.
The rat defense is played by the moves: d4, d6
Now here is something unusual: after playing d4 d6 and you play c4, you are playing the opening "Old Indian Game", but if your opponent plays e5, you go to the opening Rat Defense:English Rat!