Years ago I found one on our dog. He had never been out of Kansas. Gross.
Our barn cat had one. Normally, she wouldn’t let us get near her. But that time, she let us know that she needed help.
We had horses. They were everywhere. Not necessarily the larvae, but the flies and the eggs they laid. We were forever cleaning them off the horses’ legs.
Have found them on wild rabbits frequently. YUUUUUK!