We have tons of green belt around and know they are around.
I have a lab so she has chased a couple when see saw them in the field.
About 3 months ago, took my son to the ER about a mile from my house, in the middle of the night. When done, nothing wrong, we were leaving about 3 or so in the morning, and a pair were in the parking lot about 100 yards away.
There have actually been some attacks a couple months ago in the Frisco area. But it is very uncommon so they are not sure why it happened.