In today's VETgirl online veterinary CE podcast, we review a paper entitled “Optimal rate control in dogs with atrial fibrillation—ORCA study—Multicenter prospective observational study: Prognostic impact and predictors of rate control” by Pedro et al that was published in the Journal of Veterinary Internal Medicine in 2023. Now, you likely remember being taught about the classic “sneakers in the dryer” arrhythmia - atrial fibrillation, or what we’ll call “a fib” from now on, and why it needs to be diagnosed and treated in our canine patients.