I am fortunate to live in the northern mountains of Utah where worms are not as big a problem as they are in hot/humid climates. As such, I do not regularly worm any of my animals (horses, dogs, cats, geese, ducks) as part of my program. I do, however, get random fecal testing done and worm when needed. I also test new animals that come onto our property. And I definitely keep a close eye on everyone's poop, eating habits, and behavior. All of my animals are seen regularly by vets (it helps that my avian/small animal vet is a good friend and my horse vet lives 10 minutes away). If anything is "off" no matter how subtle, I start running through my checklist of diagnostics and get calls out to my vets or experienced owner friends.