When you welcome a dog into your life, that pet becomes a part of the family. Since most humans outlive their dogs, the sad reality is that at some point or other, we'll have to say goodbye.

Watching a pet cross over the rainbow bridge is heartbreaking and mourning a lost pet can feel like mourning a member of the family.

Photo: Pexels/Magda Ehlers

Reddit user u/E_Cash knows the sad realities of losing a pet after their 18-year-old dog named Sunny passed away.

They shared on Reddit that they received a letter from the vet following the loss of their dog that left them speechless.

"We had to put down our dog. He was 18. We got this letter from our vet. No words right now," they wrote in a Reddit post.

We had to put down our dog. He was 18. We got this letter from our vet. No words right now.
by u/E_Cash in pics

The letter read:

"Dear _ Family,

Hello. My name is Helper. I am an angel. There are a lot of angels in heaven and we all have different jobs. My job is to write people and let them know that their pets have arrived in Heaven. One of the head angels told me that you were worried about Sunny and asked me to write to you about him.

You will be happy to know that Sunny arrived recently and is doing just swell. I know that he was ill when he was with you. He had gotten very old, and when you get old, your body is not as strong as it used to be. Sunny was tired and I think that maybe he knew it was time to come here. And it is a good thing that he did, because now he is not old anymore and he isn't sick either."

Photo: Pexels/Alexas Fotos

The continued, saying:

"In fact, I saw him just a little while ago and he was running and jumping with some other dogs and having a great time.

Sunny misses you and hopes that you understand he had to come here. I am sure that one day Sunny will be there to greet you when you come here and you will have a grand reunion. Until then, we will keep him busy and happy. Here we don't have time like you do. It never gets dark. It is just one long day. And everyone here is your friend, so don't worry, Sunny is not ever going to be lonely. Some day when he sees you again, it will be like you were never apart."

The letter ended, saying: "Again, don't feel sad. Sunny is just fine. He is happy and he sends his love to you. Sincerely, Helper."