How do you explain to a dog that there is a pandemic? That's just one challenge facing Sherri Davis as she and the rest of the cast and crew resume production on Hudson & Rex. The shot-in-St. John's series co-stars Diesel vom Burgimwald, a four-year-old German Shepherd who plays police dog Rex. Sherri explains how she helps Diesel see past the masks in order to follow commands on the Citytv series. She also shares other stories from her dog-gone amazing career as an animal trainer for television.