What does it mean to dream about a green frog, green snakes and a black and white snake?

I dreamt about a medium sized green frog on the hood of a taxi and I entered the car. When I got to my destination I could hear the frog croaking so I told my friend who was with me.. She came out of the car to remove the frog but somehow the frog got inside the car and landed on the window croaking.. I was scared but somehow I knew that it wouldn't harm me, Moments later my friend took the frog and threw it out somewhere outside the car. When I exited the car I think I could still hear it, I'm not to sure, then the scene change to a bush/field place with a path in the middle and I think I saw the frog in bushes.. Then at one point I saw a green snake again my instincts screamed scared but I somehow knew it wouldn't harm me.. I walked the opposite direction and saw a bed :S there were people I knew on the bed, I 4got who they were, but again I saw another green snake, then a black and white one I think at the back of the bed.. I had a small feeling that they weren't gonna harm me, I don't know I forgot, but I do know that I was a bit scared.. What does this dream mean please?? Thank You. Sorry for the essay.