There's a reason they say a dog is a man's best friend. Dogs become a part of our family, we name them just like we name our kids, are careful about their health and eating habits, scold them when they do something wrong and love them unconditionally. And it's always reciprocated!

But unlike us, dogs age faster. They say every calendar year is 7 years in dog years. And it breaks our heart when it's time for them to go.

And that's what Robert Kugler faced recently. More than a year ago, Robert's beloved 9-year-old dog (roughly 63 years in human age), Bella, was diagnosed with cancer that had spread to her lungs, because of which the vet had to amputate one of her legs.

He told Robert that Bella had only 3-6 months to live. Robert was definitely heartbroken, and who wouldn't be when you realize you're gonna lose your closest friend and family member?

But Robert wanted to make the time he had left with Bella memorable. So he decided to take Bella on a farewell tour. He wanted to reciprocate the unconditional love Bella had given him all her life, even when he was going through some really tough times, like losing his siblings.

Here are some of the sweetest photos from Bella's farewell tour that are surely going to move you to tears:

You're never too old to have fun.

Bella with her favourite hooman and best friend.

New experiences, because life is too short for regrets.

Look at her, a natural poser!

Bye Bye Bella! *teary-eyed*

*curls into a ball and cries*

All images sourced from Robert Kugler's Facebook.