But sometimes, even the flimsiest, sorriest packages find just the right destination. The puppies were taken to a local shelter - and staff there got in touch with Jaclyn Smith, founder of East Dallas Pet Rescue.
Smith didn't waste a moment in sending a volunteer to pick them up.
"The box was filthy; it had poop and dog food all over it," Smith tells The Dodo. And these siblings had only each other to keep themselves warm.