INTRODUCTION Analgesia is central in constant care of a veterinary surgeon for the benefit of patients. Timely, effective and multimodal perioperative analgesia is the key element for preventing postoperative pains. Today, it is close to being of utmost interest in any research in veterinary profession. Castration of female dogs is the most frequent operation performed on healthy animals through standard laparotomy or laparoscopy in recent time. The two operational procedures differ both in concept and the invasiveness of surgical approach i.e. trauma intensity. For the benefit of animals, acute traumatic pain is the most frequently investigated to evaluate the effect of surgical trauma on the patient. Therefore, it is important to establish the preoperative and postoperative levels of analgesia through adequate analgesics. Pain in animals can be treated or combat through pharmacological or physical methods. MATERIAL AND METHODS Carprofen is a non-steroidal anti-inflammatory analgetic drug in the class of 2-aril propionic acid derivatives providing analgetic, anti-inflammatory and antipyretic effect. As an analgetic in acute and chronic muscle-and-bone system disorders it is also used to reduce both inflammation and postoperative signs of pain following surgical procedures. In animals pain is an unpleasant emotional and sensorial experience after or in expectation of a painful stimulant initiating defensive motor activity. An animal remembers and tries to avoid it. It can also change its species related specific behavioural patterns. Behaviouristic and physical changes indicate that pain represents at the same time awareness of an acute or chronic unpleasant situation various in degree as a result of injury, illness or suffering. RESULTS This paper compares the levels of preoperative and postoperative analgesia through the use of carprofen in laparotomic and laparoscopic operations in female dogs. It is disclosed in the form of biochemical blood parameters, i.e. preoperative and postoperative measurements in the first three days of concentration in glucose, cortisol, creatinin phosphokinase, C-reactive protein and total number of leukocytes and through determining the level of painfulness according to the modified Short Form of the Glasgow Composite Pain Scale along with the standardisation of the protocol of injection-based application of carprofen and measuring the values of temperature, pulse rate and respiratory rate as well as the recovery rate in the two surgical procedures; all this for an as best possible objective evaluation and definition of the level of painfulness caused by surgical trauma in abdominal walls. CONCLUSIONS In veterinary medicine the degree of painfulness is evaluated based on vocalization, activity and lameness levels-the-latter-if related to locomotor system and reaction to touch and manipulation. Because of no verbal communication between a vet and his/her patient is possible, it is hard to assess the level of postoperative pain. So, all such criteria are subject to numerous external influences and subjective to a large extent. Correspondingly such subjective explanation of patient‘s reactions limits greatly boath investigation and evaluation of degree of pain. To this day no sufficiently susceptible method to include all-inclusive relevant parameters has been developed. It is generally accepted therefore that pain in animals can be best evaluated through the multimodal approach including a set of methods providing the most exact accuracy by applaying interacting corrections. The obtained results justify the preoperative and postoperative application of carprofen as an analgetic drug in a surgicaly traumatized abdominal wall.