Is consensus-seeking unique to humans? A selective review of animal group decision-making and its implications for (human) social psychology
Contributor(s):: Kameda, Tatsuya, Wisdom, Thomas, Toyokawa, Wataru, Inukai, Keigo
Synchronization and leadership in switches between resting and activity in a beef cattle herd - a case study
Contributor(s):: Sarova, R., Spinka, M., Panama, J. L. A.
The mechanisms of activity synchronization in group living ungulates are not well understood. In a case study on herd of 15 Gasconne beef cows with calves observed during a total of 25 summer daylight periods in 2004 and 2005, we examined whether cows similar to each other in body weight or in...
Consistency of animal order in spontaneous group movements allows the measurement of leadership in a group of grazing heifers
Contributor(s):: Dumont, B., Boissy, A., Achard, C., Sibbald, A. M., Erhard, H. W.
The term 'leadership' has been used in several different senses, resulting in very different ways of identifying leaders and apparently inconsistent conclusions on how leadership is determined in herbivores. We therefore propose the following definitions: (i) a leader is the individual that is...
Evaluation of physical and behavioral traits of llamas associated with aggressiveness toward sheep-threatening canids
Contributor(s):: Cavalcanti, S. M. C., Knowlton, F. F.
Aggressiveness of llamas (Lama glama) toward dogs was evaluated. Physical and behavioural traits were identified in individual llamas. 20 llamas were randomly assigned to one of 4 groups (5 animals per group). Focal group sampling techniques were used to rank individual llamas according to...
The relationship of dominance, forced and voluntary leadership and growth rate in weaned pigs
Contributor(s):: Blackshaw, J. K., Thomas, F. J., Blackshaw, A. W.
Food competition dominance order was determined for 31 groups of weaned pigs (nine to 13 pigs per group, 12-14 weeks old). Voluntary leadership order was determined by allowing the pigs free access to a passage (41.5 m long x 1.35 m wide) and forced leadership order was recorded by forcing the...
Dominance versus leadership in dog training
Contributor(s):: Yin, S.