[The capacity for competition in rats raised in isolation].

It is shown, that rats, bred in conditions of intraspecies isolation are able to competition for water in the kin group, having usual experience of intraspecies intercourse. At the same level of drinking motivation in conditions of competition for water the intraspecies activity is significantly higher in rats, bred in isolation in comparison with grouped animals. Rats-isolants significantly more often than the grouped animals use extraordinary tactics of intraspecies behaviour, which increase their competitive ability in conditions of limited access to water.