But how does the protection last such a long time from such a small topical dose? It seems almost miraculous to me.
I can’t make any comment re: cancer increase in dogs due to flea treatment. You could be right of course, but I almost wonder if, back in the old day, dogs got cancer and it was just never diagnosed. One thing seems true to me, as a cat person, it seems like dogs need to go to the vet a lot more than cats.
The flea drops are monthly and kill flea larvae much as the heart worm pills do. Dogs are more treatable than cats for a wide variety of maladies, is my impression, particularly cancer. That leads to more trips to the vet, and unlike cats who are very traumatized, have to be caged to get them there and sedated once there, dogs are good sports about it for the most part, they’re agreeable and their physiology is similar enough to humans that oftentimes the same cancer protocols work for them. Well, actually it’s the other way around, many if not most cancer protocols in use today came up through canine veterinary trials before ever being tested on people.