"Something tense and exciting is what ""biting""?"
Nail biting increased stigmatization in the inner family circles or at a more societal level. Other body-focused repetitive behaviors include excoriation disorder (skin picking), dermatophagia (skin biting), and trichotillomania (the urge to pull out hair), and all of them tend to coexist with nail biting. As an oral parafunctional activity, it is also associated with bruxism (tooth clenching and grinding), and other habits such as pen chewing and cheek biting. In children nail biting most typically co-occurs with attention deficit hyperactivity disorder (75% of nail biting cases in a study), and other psychiatric disorders including oppositional defiant disorder (36%) and separation anxiety
Tail biting in pigs of tail biting: two-stage, sudden forceful, and obsessive. The type of tail biting is based on the behaviors of each the biter and victim, physical consequences of the bite, and conditions under which the biting happens. A common cause of tail biting is due to pigs feeling stressed or discomfort and are looking for something to divert their attention. Some other causes of tail biting involve possible breed predilections, gender, feed source, substrate materials, gastrointestinal discomfort, and general health of the pig(s). It usually starts out as the pig being curious to investigate its surroundings and begins with harmless nibbling.