I voted once on the first two because they both have VERY high prey drives when it comes to critters in our yard and they are always checking the yard for varmints to chase!
But when it comes to bugs, they only chase them when they bother them.
Buddy's such a goof that as soon as he hears the buzzing of a bug he'll start to snap in the air like he's going to get them!! (I don't have the heart to tell him that the fly he's snapping at is across the room )