Are you sure it's the same one?

Poor thing is just horsing around

I'm impressed you can repeatedly catch a horsefly. Those things are insanely fast and agile.

you've actually got to take them at least a mile away from your house, like mouse

I feed the flies to my fish.

you might have a horse in your home

You may be a horse

You may need to take more extreme measures...

Catch it in a jar and release it in a field at least a mile away.