Tell the insurance company exactly what happened, they will believe you. You aren't solving a murder, they don't need evidence that a deer hit you. They probably get thousands of claims just like yours a year, and unless they are a horrible customer service company you'll be fine.
same thing happened with me. I hit a deer but it was so light that it was barely visible. There were only a couple hairs on the car. I had swerved and pretty much missed it and then slammed into a curb in the process. Stupid deer. Anyway, insurance companies are good at telling what is real and what's not and they'll be able to tell from the signs of it that it's a deer most likely. Don't forget they are trained to pick up stuff you and I might not see.
A deer ran into the driver's side of my dads truck one time. He didnt even see it to swerve, just nailed him. Insurance paid for a new door. Of course since it was an old faded out farm truck we had a bright shiny red door for a couple weeks. Hasnt been that color for years.
No there isn't even a dent!!!!!! It was the strandest thing. I mean this deer nailed me.. When it hit the side of my car it sound like a shotgun went off. I was expecting my whole side to be dented in but there is just alittle spider in the paint about the size of a 50 cent peice and then light scratches down the side of my car. That is why i am worried about what the adjuster is going to say when i take it to him next thursday. The damage at most will be 400 bucks.
I would tie a rope to the legs of the deer and drag it home, while leaving long bloody trial along the highway.. hehe just kidding.. sorry about the news, luckily is not too much of a damage.
One time in Chicago, a deer went head on w/ my company mini-van , Honda Oddessy, smash the front wondow, the radiator pushed in, front hood is totally damage. 4000 USD to repair....