A mailman is a dog's best friend. Sounds a bit odd? But who said that dogs necessarily don't like mailmen? Sure, mailmen get special training to fend off attacks from canines, and it comes as a rule to avoid dogs if one can, but we all know what everyone says about rules. Something may be a rule, but there are always exceptions to every rule, and if there isn't a rule to an exception, then one should look harder. However, exceptions are naturally hard to come by, and therefore it's hard to even imagine that they exist. Yet once they're found, they turn the rule into a plain stereotype. Let's find an exception to challenge this stereotype in particular.

Take, for example, a guy from Sao Paulo, Brazil, Cristiano da Silva Antunes, who goes by the name of Carteiro Amigo Dos Animais on his social media, which neatly translates to "Animal-friendly postman." He always wanted to break the stereotype that dogs hate postmen, and he does so successfully one picture at a time. And to prove that he's a stand-up guy, he's friendly to every animal that he meets, not only dogs. He says hello to the neighboring cats, rabbits, and all other kinds of animals.

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