Authorities say 20-year-old Charles McCafferty IV of Lansdale, the animal's owner, is now facing animal cruelty charges.
The dog's remains were found on March 9, 2016 in Upper Dublin Township.
The female Pit Bull Terrier, believed to be between six months and one year old, was found inside a metal crate that was wrapped in plastic and sealed with tape.
Police say pieces of drywall were used as the bedding for the crate.
A necropsy found the puppy was seriously underweight and died from suffocation.
The Upper Dublin Township Police Department posted a picture of the crate on their Facebook page.
A joint investigation was conducted with the Montgomery County SPCA and Upper Dublin Police, which ultimately led to McCafferty.
A $5,000 reward was offered by PETA for information leading to an arrest. So far, no word on if that reward was claimed.