OH went up for his shower and as the water started flowing in the bathroom Rodders could hear it and was barking. I decided to take him upstairs to see what he would do if I was in the bathroom with him with someone else in the shower.
He still barked and tried to lap the water under the shower door. As soon as OH opened the shower door to grab his towel Rodders wanted to go and explore. He got both feet in and was lapping the water from the shower tray and from OH's legs. OH turned the shower back on gently and Rodders beat a hasty retreat!
As soon as the bathroom door was open Rodders ran to our bedroom for a good sniff around before I brought him downstairs.