Modified Formulas for Calculation of Encephalization Quotient in Dogs

Abstract ObjectiveDogs are a breed of animals that play important roles, ranging from security passing through companionship to models of research for application in humans. Intelligence is the key factor to success in life, most especially for dogs that are used for security purposes at the airports, seaports, public places, houses, schools and farms. However, it has been reported that there is correlation between intelligence, body weight, height and craniometry in human. In view of this, literatures on body weight, height and body surface areas of ten dogs were assessed with a view to determining their comparative level of intelligence.ResultsFindings revealed that dogs share brain common allometric relationships with human as shown by Encephalization Quotient (EQ)= Brain Mass/0.14 x Body weight0.528 as compared with Brain Mass /0.12 x Body Weight0.66 and Brain Mass (E)=kpβ, where p is the body weight,k=0.14 and β=0.528 which yielded better results as compared with the other formulas. Dogs with BSA, weight and height similar to that of human are the most intelligent. Doberman Pinscher is the most intelligent followed by German Shepherd, Labrador Retriever, Golden Retriever, respectively.