It never gets any easier, no matter how old we are. Understanding it all doesn't help much, either. It does beat the alternative of never having them in our lives, though. I thank God for the special gift of animals; most people have more than one special memory of our best friends. Sorry for your loss, and his.
"If you talk to the animals they will talk with you and you will know each other. If you do not talk to them you will not know them and what you do not know, you will fear. What one fears, one destroys." - Chief Dan George