There are 2 practical reasons for this:
1. Dachschund's are susceptible to bad backs. Activities like jumping up and down, climbing stairs, etc. increase the risk that he will injure his back causing paralysis or needing to be put down. While this does concern us, we are fairly realistic about it as well. For example, he has to go up and down the stairs to go to the bathroom. We did not start by keeping him off the furniture, but our personal reasons for changning our minds coincide with practical reason #2.
2. Dade, like other dogs, pees when he is excited. As a young pup he liked to sit on the back of the couch basking in the sunlight and look out our front window. Every person knocking at the door or walking by, sent him peeing all over the couch and anyone sitting there. Anyone who has ever visited us knows of Dade's bladder control issues when he is excited. One night Dade was sleeping in our bed, Kurt came home late from a trip, and Dade was startled awake and peed all over. I'm pretty sure that was when we decided he had to stay off the furniture.
(Should anyone feel sorry for him, know that he still gets plenty of loves and attention.)
So it was a surprise this afternoon when I was copying pictures from my camera to my computer and found this one-- Dade sitting on the couch.
After questioning my kids, Austin confessed: Yesterday while I was outside with Olivia & Jolie, Austin came in and decided to play with my camera, catching the culprit in the act. Dade knows when my back is turned. Speaking of which, look at what I just caught him snacking on:
OH DOG!!