There are several artists with this name, including: 1) Mammals is Australian singer-songwriter Guy Brown; 2) Mammals is a recording alias of progressive house duo Bernd Johnen and Veit Ostkamp who also record as Lesson in Love. 3) A math rock band from Beijing. 1) Mammals is the folk project by Sydney-born singer-songwriter Guy Brown. His recognizably soft vocals combine with his love of subtle instrumentation, generating a warm and ambient folk vibe.