  We construct a neutrino model of three twin neutrinos in light of the
neutrino appearance excesses at LSND and MiniBooNE. The model, which includes a
twin parity, naturally predicts identical lepton Yukawa structures in the
Standard Model and the twin sectors. As a result, a universal mixing angle
controls all three twin neutrino couplings to the Standard Model charged
leptons. This mixing angle is predicted to be the ratio of the electroweak
scale over the composite scale of the Higgs boson and has the right order of
magnitude to fit the data. The heavy twin neutrinos decay within the
experimental lengths into active neutrinos plus a long-lived Majoron and can
provide a good fit, at around $4\sigma$ confidence level, to the LSND and
MiniBooNE appearance data while simultaneously satisfying the disappearance
constraints. For the Majorana neutrino case, the fact that neutrinos have a
larger scattering cross section than anti-neutrinos provides a natural
explanation to MiniBooNE's observation of a larger anti-neutrino appearance
excess.
