In vertebrate animals, brown fat tissue's color is due to abundant blood vesses and paillaries. White fat tissue, on the other hand, is specialized for fat storage and contains relatively few blood vessels or capillaries. Brown fat cells have a specialized protein that dissipates the proton-motive force across the mitochondrial membranes. What might the function of the brown fat tissue be?
To regulate temperature by converting most of the energy from NADH oxidation to heat.