The heartbreaking stories behind 5 adorable bionic dogs.
Source: Yahoo!.com
Tortured, shot at, or left to die, these brave pups each got a new lease on life with the help of artificial limbs. 

When Naki'o
 was a puppy, he was found, along with his litter mates and dead mother,
 abandoned in a foreclosed home in Nebraska. Naki'o was literally frozen
 into a puddle on the floor, and had to have all four of his paws and 
part of his tail amputated as a result. A Colorado Springs veterinary 
assistant named Christine Pace
 got wind of the dog's woeful story and was so taken that she adopted 
the severely handicapped puppy. At first, Naki'o was able get around on 
his stumps, but as he grew, his weight limited his activity. Pace raised
 enough money to get him outfitted with prosthetic limbs
 for his back legs, which suffered the worse damage. Seeing that the 
playful pup managed so well on his bionic paws, Martin and Amy Kaufman 
of Orthopets created a pair of front-leg prosthesis as well. (You can watch a short documentary on his inspirational little life — but beware: You will cry.) (REUTERS/Rick Wilking)
 
 In 2011, Pay de Limon was reportedly the victim of a Mexican drug gang assault. It's believed
 that Mexico City gang members used the Belgian shepherd mix — whose 
name means lemon pie in English — as practice for other gruesome crimes.
 They reportedly cut off his two front paws to test out intimidation 
tactics they would later use on human hands. The dog was left in the 
trash to die, and a passerby heard his cries and took him to Milagros 
Caninos, a local sanctuary for abused animals. The staff nursed Pay de 
Limon back to health and raised more than $6,000 through donations to 
pay for two front-leg prosthetic limbs. He's now accustomed to his new 
legs and can be seen happily trotting around the sanctuary like any 
other dog. (REUTERS/Tomas Bravo)
**
 
 
Abayed
 was once a working sheepdog in Jordan. But in 2011, a stranger, 
mistaking him for a stray, shot Abayed and paralyzed his hind legs. His 
owner found the howling dog and took him to a local animal shelter, 
where the medics said it was clear the dog had a will to live.
 Instead of putting him down, the shelter took the handicapped dog in as
 their own and eventually outfitted him with a pair of wheeled legs. The
 harness gives the former shepherding dog the freedom to roam the 
shelter's grounds, wrangling the occasional rogue sheep or goat just for
 the fun of it. (IMAGE: REUTERS/Ali Jarekji)
**
 
 
Phil
 and Nancy Stafford would do anything for their long-haired collie mix 
Maulee. And in the summer of 2001, when their beloved pet got tangled in
 the blades of a wheat cutter near their home in Jasper County, Ga., 
their dedication was put to the test. Maulee lost part of her right paw 
in the accident, and nearly bled to death. But after five days in the 
hospital, the dog recovered and the Staffords began calling around to 
veterinarians who could create a prosthetic for their dog. The initial 
search proved difficult, with some vets even laughing at the idea. But 
eventually, a medic who specializes in human artificial limbs agreed to 
the unique challenge. "When I designed Maulee's socket, I approached it 
very much like I would if making an arm for a patient that had the same 
level of amputation," Daniel Holzer said.
 After several iterations, Maulee was outfitted with a nylon sock and a 
flexible limb that allowed her to roam the fields like before. (Erik S. Lesser/Getty Images)
**
 
 
Cassidy
 was already missing a leg when Steve and Susan Posovsky adopted him 
from a New York shelter in 2005. At first they just wanted to care for 
and love the dog, but it quickly became clear that the handicap was 
taking a toll on his mobility and health. "You could see his posture; it
 was really hard for him," Susan Posovsky said.
 Cassidy's owners went to veterinary orthopedic surgeon Dr. Denis 
Marcellin-Little in North Carolina, who was inspired to create a canine 
first — an integrated artificial leg. "We worked for about a year to try
 to design an eternal brace that was fairly sophisticated, but did not 
work very well," Marcillin-Little said. Cassidy ended up graduating to a
 permanent prosthetic — a titanium rod implanted into Cassidy's lower 
leg bone. A carbon-fiber foot with a rubber tread for traction is 
screwed onto the implant, which, over time, fused seamlessly with the 
real bone. Now, the dog can sprint with the best of them. "Watching him 
run on the beach is a very emotional thing for me personally," said 
Steve Posovsky, pictured getting a kiss from Cassidy. (AP Photo/The News & Observer, Shawn Rocco)