I'm glad to hear your dog is okay. A few years back, I had to put my cat down. She was 21 years old; my dad brought her home when I was just a year old. It was very difficult for me, she was part of our family. My dad knew she was sick, but was just too attached to have it done. I came over to visit my parents, and she was skinny and sickly, hadn't eaten in days, slobbering on herself, etc. She had been having seizures for the last year or so, the vet said she had a brain tumor that would eventually cause this to happen. At the time, she said the cat was touch and go, that she could die during a seizure if left untreated; but due to her age, they wouldn't operate on her. I took her to an emergency vet clinic and had her put to sleep. Probably the most gut wrenching thing I've ever done.