We propose the Animetrinica hypothesis: certain quantum biological processes in complex living systems may couple weakly to the quantum phase structure of the neutrino field — including possibly sterile components and the Cosmic Neutrino Background (CνB). The primary substrate of any putative encoding is identified as the relative phase Δφᵢⱼ between neutrino mass eigenstates ν₁, ν₂, ν₃. This framework remains compatible with all current experimental data and occupies the unexplored intersection of quantum biology, astroparticle physics, and fundamental information theory. Three falsifiable predictions are presented. This is preprint v4.0.