Sadly, this little puppy's owner had no choice but to leave him behind.

The 3-month-old Chihuahua, named Chewy, was found injured and alone inside a Las Vegas airport restroom over the weekend.

Found along with Chewy was a handwritten note from his owner describing how they had fled mistreatment together — a desperate escape which, heartbreakingly, ended up forcing them apart:

"Hi! I'm Chewy! My owner was in an abusive relationship and couldn't afford me to get on the flight. She didn't want to leave me with all her heart but she has NO other option. My ex-boyfriend kicked my dog when we were fighting and he has a big knot on his head. He probably needs a vet. I love Chewy sooo much — please love and take care of him."

Fortunately, Chewy wasn't alone for long. A Good Samaritan brought him to Connor and Millie's Dog Rescue, where president and founder Linda Gilliam first learned his backstory.