My dog had cancer recently and my vet said there has been a significant uptick in canine cancers within their practice and “we don’t know why.” My dog’s cancer was a rare thyroid tumor. Possibly related to Apoquel (anti allergy) med. She also almost died from the kennel cough vax (Bordetella) a few years back and the emergency vet said her dog nearly died from it. I get the impression most vets just keep plodding along with their usual vax recommendations because.. money.