Holding Lazer and his family in the light.
I, too, only know a little bit about a-fib in humans; that it can be managed for years through various means. I agree about calling to report the cough.
Welcome to Anna and her new family. People here often say that greys are the most cat-like dog (something one of my hounds would deny indignantly).
They'll be fine once they are indoctrinated into the cult become better acquainted with greys.