I'm so sorry that you finally had to put Rufus to sleep Like the others have said, at least you knew it was coming and had a little time to grieve for him and be with him before he left for the Rainbow Bridge.
I'm sure Keisha, along with all the other animals that have passed recently will be there to welcome him to a life of no pain, and wonderful fields to run and play in everyday.
We will be here anytime you need to talk.
{{{{Hugs}}}
Anna