Before-and-after pics are one of the internet's favorite parlor games.
And within the genre fall so-called side-by-side "glow-ups," which typically chart the progression from awkward adolescent to right-swipe-worthy adult.
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But, as a massively viral Twitter thread reveals, the format isn't solely reserved for humans.
"The only glow up that matters."
Prompted by a tweet from @animalcute, people on the microblogging platform are sharing images of their dogs' transformations and the result is a sprawling thread as heartwarming as it is adorable.
For your scrolling pleasure then, enjoy this curated selection of the very best and squee-inducing contributions.
1. "Four months between these pictures!!"
2. "A grown boy 😭"
3. "She grew up sooooo fast!"
4. "His face says it all"
5. "[What a swiss shepherd puppy looks like after] seven months"
7. "Omg, this is my [good] boi"
8. "Just add water and fluffy POOF later you gotcherself a big ol' pupper!"
9. "This is the cutest thing i have ever seen."
10. "La bebé 🖤"
11. "Minnie not so Minnie anymore...."
12. "4 month difference 🐾"
13. "Same energy"
14. "Cute doggo. I see that it also ate your walls.🤣🤣🤣"
15. "Looking like me when I get forced to take pictures"
SPOILER: He's not really all grumps all the time.
We're not crying, you're crying.
Got a pet glow-up of your own to share? Post it below in the comments or find us on the ole Facebook.