An Evaluation of the Aboistop Citronella-Spray Collar as a Treatment for Barking of Domestic Dogs

Table 2

Operational definitions of behavioural reactions based on those observed in the studies of Piette [18] and Brunelat [11].

Behaviour	Definition
Hiding	Subject uses a physical structure to conceal itself (e.g., under a bed or table).
Aggression	The display of typical defence reflexes such as biting, growling, or attacks towards animate or inanimate object.
Momentary inhibition	Subject remains still for a few seconds without showing any other behavioural reaction.
Escape	Subject attempts to run away from the location in which the spray was released.
Sneezing	Subject sneezes once or several times immediately after the discharge of citronella.
Trembling	Noticeable trembling.
Prostration	Lying down.
Head shaking	Subject briskly shakes its head from left to right as it generally does after a bath.
Other	Other unspecified behaviours are reported as they appear.