Because de-worming medicine is essentially poison. The idea is to kill the parasite but not the host. Considering healthy animals can carry a decent parasite load, I think it would be worse to poison your animal by giving it dewormer without the parasite to absorb the bulk of it and then be passed. Too high a parasite load such as tapeworm in mammals can cause things like anemia which can lead to a downward spiral, but I think most animals carry some sort of parasite load since there are so many and take it in stride when otherwise healthy.
Sent from my SM-G950U using Tapatalk
Reply With Quote