The term "animalic" refers to both raw aroma materials and "fantasy" notes (derived from synthesis in the lab) which directly evoke a scent reminiscent of animals—either real ones, or more metaphorically, the libidinous nature of our own human animal instincts—and their primal force.
In perfumery, animal notes were traditionally rendered through deer musk, castoreum, ambergris and civet cats, but nowadays, ethical concerns for these animals' welfare have rendered their use obsolete and the substitution with synthetic variants a rule.