An account in Williamson County, Texas

This sighting has stayed with me for a long time. I didn't want to submit it at first, but based on the number of sightings identified I am now forwarding on what I saw. My son and I were driving down county road 200 in Liberty Hill, TX. We came to the end and made a right turn on county road 236. We were heading towards Killeen, TX at the time and it was in the morning. At the time, the car I was driving had two little plastic pieces on the front of it that were designed to create sound to scare away deer. I got them because my car was a small car and I didn't know if they would help, but as this is an area with a lot of deer, it was worth a try. I am not sure if this is what scared what I saw. Just after we made the right on county road 236 I saw what I thought was a gorilla on the left side of the road. It seemed agitated and as we got closer it ran across the road and climbed into a tree on the other side. At that point I saw the tree move wildly with the leaves and branches swaying like it was extremely angry, or like a strong wind had hit it. As the day was calm the only thing that could have caused this was whatever jumped into the tree. I didn't look up and I didn't stop due to my son being with me, but that sighting has always remained with me as it was so unusual. I have seen gorillas in the zoo and it looked similar. I would say that it was relatively tall and was standing on its hind legs as I got closer to it and as it raced across the street in front of us. It didn't seem as tall as I would have imagined... maybe 6ft. It was hard to tell height from where I was in correlation to what I saw. After this event I checked to see if a gorilla had escaped anywhere near me and didn't find anything. To many this will sound like a tall tale, but to me it was very vivid.