A series of cat-themed variants will be coming to some Marvel Comics titles beginning in Febuary 2019. Although no art, artists, or details have been revealed as of yet, this would seemingly tie into Goose's role in Marvel Studios' Captain Marvel coming out March 8.
Goose looks like a cat - but in comic books, he's from an alien race called Flerkens.
So far, six titles are known to have cat variants: Daredevil #3, Friendly Neighborhood Spider-Man #4, Guardians of the Galaxy #3, Meet the Skrulls #2, Thor #11, and Wolverine: Infinity Watch #2.
Back in 2014, there was a popular series of animal variants by Marvel - including this Savage Wolverine #14 variant by Chris Samnee.