Dogs are popular pets and they cooperate with humans in various ways. Despite this close relationship little scientific evidence has been gathered on individual differences in dogs. In such research questionnaire studies and behavior tests are utilised for collecting behavioral data (e.g. Dog Mentality Assessment test: Svartberg and Forkman, 2002; Socially Acceptable Behavior test: Planta and De Meester, 2007). In our study the main aim was to develop a test battery for family dogs (FIDO) which consist of short and easy-to-execute test elements focusing on the social interaction between humans and their dogs and there is no need for highly trained experimenters or complex equipments. In our study we tested two dog breeds: border collies (N = 50) and retrievers (N = 50). Dogs were characterized by three instruments: (1) Dog-ADHD Rating Scale assessing Activity-impulsivity and Inattention; (2) The Dog Big Five Inventory (DBFI) assessing Energy, Affection, Neuroticism, Intelligence and Conscientiousness; (3) sociability test for family dogs (FIDO) which consists of 14 subtests. From the behavioral variables recorded in the FIDO we developed three behavior scales: Sociability (Cronbach alpha = 0.72), Activity-impulsivity (Cronbach alpha = 0.74), Trainability and playfulness (Cronbach alpha = 0.61). We found negative correlation between the Trainability and playfulness behavior scale and the Inattention questionnaire scale (r = −0.29, P = 0.003). And also found a difference between the two breeds: border collies got higher points on Trainability and playfulness behavior scale than retrievers (P = 0.03, U = 942). Our results show that FIDO is an easy to use and appropriate mean for studying the individual differences in dogs, which could be applied at different locations and laboratories, and offers the possibility to compare different dog populations and breeds.