1:1 amphibian anthro blush blush_lines bodily_fluids clothing dragunsnack drooling duo genital_fluids genitals gills gloves handwear hi_res imminent_death laboratory male mammal mask medical medical_gloves medical_instrument mouse murid murine open_mouth penis precum restraints rodent salamander saliva scalpel scientific_instrument spiral_eyes strapped_down surgical_instrument surgical_mask surgical_operation vivisection