Poor Theo was given just months to live after his testicular cancer spread, and is now unable to walk. But the pooch remains in high spirits, and is living the fullest life possible thanks to his doting owner.
Jenny Leech, 52, from Illinois, US, fostered 13-year-old Theo on 27th May this year, after he was left abandoned in a Walmart carpark by his previous owners.
The meeting manager knew there was something 'special' about the doggo, and began compiling a mammoth bucket list of fun activities for him.
Theo has been wild swimming - with the help of an inflatable, aww! - taken to the skies in a private jet, hung out with horses and been on romantic picnic dates with fellow pooches from his neighbourhood.
Whether he's gobbling an ice cream or enjoying the wind through his fur in the back of a sports car, the loving retriever is making the most of every day, with Jenny's help.
We're not crying, you're crying.
Theo's testicular cancer has sadly spread to his prostate and his abdomen.
While he's not a candidate for surgery due to the scale of the spread and his age, he is taking medication to slow progression and reduce any pain, which keeps him very comfortable.
The adorable pooch is a hit with staff at BAARK Dog Rescue and Live Like Roo, who are committed to Theo's care.
"Despite everything he is sweet, happy, and loving with a huge zest for life," said Jenny.
"His bucket list was created to give Theo a chance to experience amazing things and receive huge amounts of love," she added.
What a moving story - Theo, we're sending you a big cuddle.
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