Since the dog's passing, Catanzarite's brother had kept his old collar on a bookshelf in his room. The other day, Zeus found it — and his heart seemed to swell.
"I saw Zeus sniffing by the bookshelf and then he jumped up and sat right by the collar," Catanzarite said. "It made me so sad seeing how happy he was to find it and finally smell Sam again."
Here's video of Zeus rediscovering the scent he'd so dearly been missing: