As tough as these guys may seem, all it takes to melt their hearts of stone is a little ball of fur.

The video comes from BuzzFeed, which took these guys to Kitty Bungalow Charm School For Wayward Cats, which rehabilitates feral cats in L.A., for a day full of cute and cuddly kittens.

Most of the guys claim that they don't like cats or are allergic before entering the shelter, but their attitudes totally change when they're being used as a jungle gym by three little kittens.

You can deny it all you want BuzzHead, but you would act the same in that situation. Who wouldn't?

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