Ultrasonic vocalizations and social learning of food preferences by female Norway rats

Article Abstract:

A study is conducted to examine whether ultrasonic vocalizations facilitate social learning of food preferences in female Norway rats, Rattus norvegicus. Females produced ultrasonic vocalizations at higher rates when they are reunited with a familiar conspecific if one member of the reunited pair had eaten an unfamiliar food while the pair members are separated.

Food habits, Rats, Sound production by animals, Animal vocalizations, Rattus

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Sexual selection and social rank in bighorn rams

Article Abstract:

A study investigating the relationship between dominant social position and reproductive status in male bighorn rams (Ovis canadensis) is presented.Body weight of the males is a major determinant of social status of bighorn rams.

Canada, Body weight, Social hierarchy in animals, Dominance (Animal behavior), Courtship of animals, Mating behavior, Animal reproduction, Rams, Mating behaviour

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