As someone who has five cats and a gigantic Black Lab [1], I've seen first-hand that pups can get along swimmingly with kitties [2]. Whether I stumble upon sweet cuddly moments or catch a glimpse of them sniffing each other out, it's always enough to make me stop dead in my tracks from witnessing such cuteness. In order to celebrate these seemingly unlikely friendships, I rounded up some of my favorite videos [3] of four-legged friends spending time together, and yes, they all make my heart ache with joy. Scroll ahead to get a look at some truly heartwarming clips that prove friendships come in all shapes and sizes.