When Philadelphia-based animal rescue Operation Ava took in a pair of 8-month-old pit bull mixes, shelter workers noticed something strange about the dogs.

When they walked, the dog they’d named Jeffrey always followed behind his brother, Jermaine, with his head resting on Jermaine’s back. That’s when they realized that Jeffrey was blind and his brother had stepped in to be his seeing-eye dog.

The dogs were inseparable and even cuddled together at night.

"These guys are bonded, and Jeffrey really is dependent on Jermaine at this point," Ray Little, lifesaving director of the shelter, told Philly.com. "When they are separated, they get really insecure."

Veterinarians think Jeffrey was born blind in one eye, but may be able to see shadows with his other eye. He’s only comfortable walking when he has Jermaine to guide him.

Workers decided that the dogs should be kept together, but they hadn’t received any adoption applications for the pair until a photo of the cuddling pair was posted on the Chester County SPCA Facebook page.

The photo went viral and soon applications were pouring in from across the United States, as well as from Canada, Belgium and South Africa.

Operation Ava accepted applications through Nov. 19, and workers are now trying to choose the best placement for the dogs.

“We received many applications and are going through them now, checking references and determining the best home for Jermaine and Jeffrey,” the dogs’ adoption page reads.

Although Jeffrey and Jermaine will soon have a loving forever home, Little encourages anyone who’s been touched by the dogs’ story to adopt a rescue animal or donate to a shelter.

“We urge people to go to their local animal shelters,” he said.

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Laura Moss writes about a variety of topics with a focus on animals, science, language and culture. But she mostly writes about cats.

Blind dog's brother acts as seeing-eye dog
A photo of the 2 rescued pit bull mixes recently went viral, and applications to adopt the bonded pair have poured in.