So I let Cody out on the deck to made a pee-pee, I have a few pieces of patio furniture to the left of the door, he disappears behind this furniture, then he starts chasing what I think is a mouse. I quickly go to see what he's chasing next I see is Cody in Cujo mode dragging this opossum across the deck. I am screaming to "leave it" screaming his name, screaming to "get in the house". He had it several inches above the opossums tail, faster then a speeding bullet he was under the patio table then in the corner of the deck, things were happening so fast I think the opossum was curled up. I don't know how I got through to him, he was like a possessed demon, but thank GOD he let the animal go and went in the house on command. I checked him for any bites, thankfully he's ok. I am still shaking, he could have gotten shredded by the opossums teeth or nails. I am living here 18 years and this is the first time a opossum has ever gotten on the deck, I don't know how it got on it. Now day and night I will go out first to check the deck is free of critters before letting devil dog out. Please, anyone that has outdoor furniture that blocks your view when your pup goes out check the area first, these terriers are fast and furious. I am shaking and he is begging to go out and finish the job. The opossum was gone, after I checked Cody for any wounds I went out to make sure that animal was gone or dead