Exhausted and short on options after consulting two veterinary clinics, Kristie Pereira made the gut-wrenching decision last year to take her desperately ill puppy to a Maryland shelter to be euthanized.

So she was stunned last week to find the dog up for adoption at the same pet rescue organization where she had gotten it.

“I have a lot of questions, but first and foremost, I want him back with me,” Pereira told The Associated Press on Friday.

Pereira, who now lives in San Antonio, said…