Sadie was hospitalized, along with her brother, Ivan, several weeks ago at the Aboretum View Animal Hospital in Downers Grove, Ill. Both puppies fought to overcome Parvo, a contagious disease that affects only canines.

Shelly Rubin, one of Winfrey's former veterinarians, said that he "know[s] that Sadie is eating and doing really well," he said.

"Once they [dogs] start doing that [eating] with this disease, it's considered a nice turn-around."

Ivan, the second puppy Winfrey chose to adopt from a Chicago rescue, died nearly two weeks ago from complications associated with the disease. Read more about Ivan here.

Winfrey, however, remained "hopeful that Sadie will pull through," as her spokeswoman previously said.

Rubin, of the Blum Animal Hospital in Chicago, said that he has not spoken to Winfrey since Sadie was released from the clinic, but that at the time, she was overjoyed by the situation's apparent happy ending.

"Nothing can be happier than saving a life, especially with a scary disease like that," Rubin said.

For more on this story, visit www.zootoo.com/petnews/

Photo Credit: www.zootoo.com and Harpo, Inc.