Categories Funfact Most male mammals still have nipples – except for mice, stallions and platypuses. Post author By admin Post date August 21, 2014 Most male mammals still have nipples – except for mice, stallions and platypuses. ← Pencil erasers aren’t made from natural rubber due to allergies. They are mostly made of petroleum-based synthetic compounds. → If you blended all of the images on the internet together, the result would be orange/bronze coloured.