These days, he has a lot to be happy about - and even better, he's surrounded by all of the love and care he was previously denied.
Rambo was found back in March by a member of Every Life Matters Animal Rescue in Rock Hill, South Carolina. Surrounded by animal carcasses, Rambo was so cold his body was going into shock. His injuries suggested that he had been used as a bait dog for dogfighting - rendered defenseless and used as a practice target for fighter dogs.
"It reportedly went really well," CARE wrote in a Facebook update. "He got to spend lots of time snuggling with other dogs."
In addition to a foster family and a shiny new name tag ...
... Rambo's also been fitted with a wheelchair that helps him move around more freely, just like any other dog.
"He just got in his [wheelchair] ... so he's still getting used to it," Dr. Laura Dvorak, who's been overseeing Rambo's recovery at CARE, told local outlet WCNC. "But they typically pick up on it pretty quick."
Rambo still has surgeries ahead of him in the future, as doctors have been working with skin grafting techniques to help heal his stubs, and make walking on them comfortably without the use of a wheelchair a reality.
But Rambo's future looks brighter than ever - and he seems to know it too.
If you're interested in helping Rambo with his medical costs, consider making a donation here.
Click here to learn more about how you can help make dogfighting laws even tougher on convicted offenders.
Watch this video about Daisy, a dog who used to be unable to walk ... until now: