Scottish authorities are looking for the person who abandoned a dog at railway station, leaving a suitcase containing the dog's belongings.

The young Shar Pei mix was found tied to a railing in the Ayr train station Friday night next to a rolling suitcase that contained a pillow, toy, bowl and food.

The Scottish Society for the Prevention of Cruelty to Animals (SPCA) is caring for the dog and trying to track down the owner.

The dog is microchipped, so authorities were able to learn the animal's name is Kai. When they contacted the person registered to the microchip, the person said they sold Kai on Gumtree, a classifieds website, in 2013 and didn't have a way to contact the new owner.

"This case highlights the potential consequences of selling an animal online as it often leads to the impulse buying of pets that people know very little about,” SPCA Inspector Stewart Taylor said in a news release.

"Regardless of the fact Kai was left with his belongings, this was still a cruel incident and we are keen to identify the person responsible.”

If found, Kai’s owner could be charged under Scotland's Animal Health and Welfare Act and face a lifelong ban of keeping animals.

Taylor said Kai is a "lovely dog with a nice nature," and estimates that he's 2 to 3 years old.

The SPCA will care for the dog until they find him a permanent home — and it doesn't seem like that will take very long.

Photos of Kai sitting beside his small suitcase have attracted thousands of comments on social media from people expressing concern for the abandoned dog and offering to adopt him.

Related on MNN: