I am so sorry. We all know how much you love your dogs. I know its very hard to accept your loss because Rebel left before his time. Take comfort in the fact that he will be waiting for you at Rainbow Bridge. Don't beat yourself up about the mistake but at the same time, you can learn from it and be very careful with Roxy. When something bad happens to someone else's pets, especially the ones here at Pet Talk, it feels like something happened to my own child. Tears are being shed here for Rebel and you and Roxy will be in my thoughts and prayers. Be strong, Roxy needs you.