photo: Reuters

Zac Efron's adorable Australian Shepherd, Puppy, has passed away, the actor confirmed in an Instagram post Thursday night (August 25). 

"Through thick and thing you've always been my best friend. I'll see you at the finish line, RIP Puppy Efron," the actor captioned a photo of Puppy giving him a big kiss. He also memorialized his canine comrade with lyrics from Chance The Rapper's "Finish Line / Drown."

This is pretty damn unfortunate timing, too, considering Friday (August 26) is National Dog Day. It's really too bad not everyone can have immortal pets (like this writer). 

The famously dog-loving dude also has another Australian Shepherd, Dreamer, and a mutt, Chappelle, who he and ex-girlfriend Sami Miro rescued in 2014. 

We're sending our love to Efron and his furry family today. 

A photo posted by Zac Efron (@zacefron) on