Cats React was a one off joke series of The Fine Bros' React series for April Fools Day 2014. It premiered on the Fine Brothers YouTube channel on April 1st 2014. It featured kittens, cats, ... Read allCats React was a one off joke series of The Fine Bros' React series for April Fools Day 2014. It premiered on the Fine Brothers YouTube channel on April 1st 2014. It featured kittens, cats, and then YouTubers dressed as cats. It returned in 2016 to promote a film.Cats React was a one off joke series of The Fine Bros' React series for April Fools Day 2014. It premiered on the Fine Brothers YouTube channel on April 1st 2014. It featured kittens, cats, and then YouTubers dressed as cats. It returned in 2016 to promote a film.