Weird huffing noise made repeatedly and loudly. Sounds quiet on the recording. I did not see the deer; but I am guessing there was a fawn nearby as I was passing and she was huffing and snorting to get me away from the fawn.
Accidentally spooked a white-tailed deer (Odocoileus virginianus) and it screamed! I didn't even know they vocalized before this. Didn't manage to get a photo, brain short circuited trying to process the situation.
Added a screenshot of the video just to show the environment - I saw the deer high-tailing it towards the trees, but then lost sight and realized I should record the sound...