Sadie is a three-year-old Pit Bull in Simi Valley, CA, who needs $1,288 for critical care.

What you can't see from Sadie's heart-wrenching shelter photos is how she sat shaking in her kennel and had lost hope. Her face was cracked and bleeding. She lost a large amount of hair on her body and was in agony.

"She was trembling with fear," Mark R., the head of Southern California Pit Bull Rescue, tells Waggle. "It broke my heart seeing the condition she was in."

When a rescue volunteer first saw Sadie, she contacted Mark, who immediately went to the shelter and saved the dog. He was utterly perplexed about what had happened to Sadie. "Her face was covered in dried blood," he says. "I didn't know if she was attacked by other dogs? Was she used as a bait dog? Was it some sort of mites?"

Mark got Sadie in the car and drove as fast as he could to VCA Westlake Village Animal Hospital, where the medical team went to work trying to help her. Sadie's skin was so dry her tear ducts stopped producing tears. It appears that Sadie may have been used for breeding and had many litters of puppies. "She was probably just a money-making machine for someone, and when they didn't want her anymore, they just threw her away," Mark adds.

After many tests, it appeared horrendous food allergies were the culprit behind Sadie's pain and skin condition. Sadie got medication to ease her suffering, antibiotics to help her skin infection, was treated for all her medical issues, and was spayed; her puppy-making days are over.

The rescue spent more than $2,000 on Sadie's care, and they're hoping big-hearted pet lovers will help donate toward her veterinarian bills. "I can't rescue these amazing dogs without people opening their hearts and their wallets," Mark says. "We are nonprofit and depend on people helping us help the voiceless."