Cats Can Have a Little Salami is an image macro series with captions indicating that it is safe to feed cats small amounts of salami as a snack. The images derives from a 2017 Google result for "can cats eat salami" and evolved into a wholesome phrase which rose to popularity in November 2019.
as a treat, of course. I can't believe this has been around for a year
this is revisionist history; cats can have "little a salami", not "a little salami"