Sawyer, D C Dose response to butorphanol administered subcutaneously to increase visceral nociceptive threshold in dogs. [electronic resource] - American journal of veterinary research Nov 1991 - 1826-30 p. digital Publication Type: Journal Article ISSN: 0002-9645 Subjects--Topical Terms: Analgesia--veterinaryAnimalsBlood Pressure--drug effectsButorphanol--administration & dosageDogs--physiologyDose-Response Relationship, DrugFemaleInjections, Subcutaneous--veterinaryMaleNociceptors--drug effectsPulse--drug effectsViscera--drug effects