They definitely don't do well with temperature extremes. In the summer, Samson especially with his age is really affected by the heat. So lots of water, keep activity low, and I give them popsicles...Samson also likes ice rubbed on his belly & chest..They make these really nice cooling mats, Dr Fosters carry them, you can use those in a crate, on the floor or in the car....
Winter time here is cold, but no snow. I think this year I'm getting each of them sweatshirts to wear to help keep them warm. Again Samson is my issue, arthritis gets to him and Angel has no fat on her so I'm sure she's going to need some help too..Funny thing thing tho, If you go out and play or walk, even in the freezing cold or snow, they will go with you. When Buck & Tia were in quarantine, it snowed and they had a blast playing in it. I just made sure to wipe their feet off real well and make sure they were dry....