Yes, Thanos also killed half of all puppies and kittens in Avengers: Infinity War
Multiple characters in Avengers: Infinity War state that intergalactic warlord Thanos’ ultimate goal is to restore balance to the universe by wiping out half of all life, and by the end, he finally makes it happen thanks to the limitless power of the Infinity Gauntlet. The movie then showed the devastating aftermath of Thanos’ victory, with several minutes of sustained misery as hero after hero faded into dust and then a post-credits stinger that featured Nick Fury trying to make his way through a busy city street as half of the people driving cars or flying nearby helicopters began to disappear. Still, Thanos didn’t just wipe out half of the people in the universe, he wiped out half of all life, an important distinction that Birth.Movies.Death. decided to get some clarification on from Marvel Studios head Kevin Feige.
The site asked Feige if Thanos’ Infinity Gauntlet snap had also killed half of all the animals in the universe, and Feige confirmed that it did, adding, “Yes, all life.” In other words, we may have all shed a tear or two for Spider-Man and Groot in the movie, but a whole bunch of dogs, cats, bugs, and (probably) plants were also fading into dust at the same time that the superheroes were being wiped from existence. One corner of the internet may disagree, but it turns out that Thanos really is a true motherfucker, and we’re ready to see Brie Larson show up and kick his purple butt in Avengers 4.
Also, now that we’re thinking about it, does anyone in the MCU even have a pet? Lockjaw from The Inhumans doesn’t count, Hela’s wolf died in Thor: Ragnarok, and Justin Hammer never bothered to recover Ivan Vanko’s precious bird in Iron Man 2. C’mon Marvel, give Captain America a dog!