YES THEY WILL!!! There was a story on disc. or one of those channels about a year ago. This guy had a pet buck that he kept penned up in his back yard. His neighbor(a lady) liked to jog every morning. One morning she was jogging got a few hundred feet past his house when she noticed she was being followed. She turned around and saw the deer and didn't think much about it, until the deer started to chase her. Well the deer attacked her giving her multible wounds from the horns, the buck also kicked her, and even bit at her. She ended up in critical condition from all of the wounds. The conservation officers said that the deer broke loose from its pen and atacked the women because of its hormons and the fact that it had no fear of humans. never under estimate the power of nature.