Thanks to natural selection, living in nature is an experience that — for most animals born without giant claws or the ability to spray toxic bodily fluids from it’s behind — has a lot in common with a leprechaun’s penis: it’s short and hard. Fortunately, it’s not all pure horror and there are softer sides to being alive as well. For example: many animals are sociable, at least among their own kind. Sometimes, however, buddying happens between different species that defies all laws of nature and in some cases the natural food-chain itself. Here are 50 unusual animal friendships that are as surprising as they are heartwarming.