I have had to put Two Dogs to sleep. My rotti girl Zoey, had to be PTS due to severe arthritis in her spine, she couldnt walk very well, and was suffereing so much, it hurt us all to see her like that. We also just last year had to put our Rotti Boy Zues to sleep, due to Cancer in his stomache and his throat. It was very hard on us! They were both such great dogs!