RAJ H, AMARPA A, SINGH GR, AITHAL HP. Postoperative pain management in dogs: Efficacy of pre-emptive analgesia with lignocaine and ketamine. Indian J of Anim Sci. 2013;70(4). Accessed October 23, 2025. https://epubs.icar.org.in/index.php/IJAnS/article/view/35737