What have you guys figured out as to having the back seat safe for dogs? After we purchased our 2019 Kia Optima, we didn't even leave the lot before I pushed on the brakes a little to hard "not being used to them", and our four legged son fell between the back seat and the backs of the front seat. He was wedged in tight. I stopped and lifted him back up on the seat. The wife had to sit in the back seat with him, so he would not fall again. Since then, because we take him almost everywhere we go, we drive our Jeep Wrangler 90 percent of the time, because it is dog friendly, due to back seat folding flat. About 8 percent of the time we take our Ford F250 pickup, because he can lay flat in the back seat. Therefore, we are driving our Kia 2 percent of the time, while he stays home. This does not make him a happy camper when he has to stay home. He is 12 years old, and each day that he is with us is precious.