Lou Dog

So my baby boy is old af. His body is breaking down rapidly.  He can barely walk. Can't hold his bowls. He hurts constantly. I cant afford to do the things alone and would love to keep his ashes. I want him to go as humanely and peacefully as possible. Literally anything helps. 
He has been my dude for almost 9 yrs now and his body can't anymore. He was brought into my family as my daughters little brother. I am trying to humanely euthanize him amd cremate so Nora and myself can keep his memory near us forever.