Yes, this is perfectly normal. You know how important your pet was to you while he was alive. How could you not grieve his loss? Give yourself permission to grieve fully and know that it will take time. Feelings of guilt only make grief harder to deal with. While you know intellectually that the decision to euthanize your pet was the right one, it is difficult to acknowledge emotionally. If you are struggling, there are many pet loss support groups who will assist you. I have included some of their information along with a general overview of the grieving process in the grief section of this web site. Hopefully, you will find the information helpful.