The body’s immune system runs on a circadian rhythm, meaning the timing of treatments like immunotherapy or vaccines can influence how well they work. Studies in humans and animals show that morning administration often leads to stronger immune responses and better survival outcomes, a finding now being explored for canine cancer care.

Vaccines can sometimes trigger cancer—but they also prevent and treat it. Explore the science behind cancer vaccines in pets, from rare injection-site sarcomas to promising new immunotherapies for dogs and cats.