My dog Lives to catch bugs, mice, etc.
I haven't had a mouse in the cellar in Fall since I got her, whereas before her there were 2 or 3 a year, despite sometimes having cats...(old house, no pesticides outside ever, a mouse paradise.)
Sassy CONSTANTLY hunts down the nests so the population went Doooowwwnnnnn.
I call her my huge cat in a dog suit!
My cats do that!! And yesterday they were on a rampage, something was flying around and they were bound and determined to get it. I never did see it, but it kept them busy for over an hour and wore them out.