SNAKES!!!!

Please someone anyone tell me the truth......Is this a rattle snake?????

I was in the back yard showing Matt the Vinca that I planted (everywhere) and I stuck my hand right next to this. It took me a second to realize that I really seen this then of coarse came the screams and we are moving. By the way I have free Vinca you come and put your hand in my rocks and pull it out and it is yours. I guess Vinca spreads a little faster then I was told so I need to pull it out before it roots!! FUN FUN FUN. I HATE (and that is a mean word) SNAKES! Someone HELP!!!!!!