The differences between a dog behavioural problem and a dog training problem may be difficult for some dog owners to understand, due to the lack of a formal definition. At the same time, the dog training techniques utilised by dog trainers and behaviourists may often compete when considering which practitioner is better qualified to meet the dog's or owner's needs. The disciplines of dog trainers who follow a behavioural approach, informed by the study of the science of behaviour modification, is often juxtaposed against dog trainers who present themselves as experts at solving behavioural problems. The discussion and assessment, for some, may be more about appropriate methods and tools, rather than use of the term behaviourist. It is thought that dog trainers who study behaviour, tend to refrain from referring to themselves as behaviourists, because they are aware that the title would be inappropriate.