Contagious Yawning in African Elephants (Loxodonta africana): Responses to Other Elephants and Familiar Humans.

ABSTRACT: While spontaneous yawning is common across all vertebrate classes, contagious yawning is less common and has been observed only in a few species of social animals. Interspecific contagious yawning in response to yawning by humans has been observed only by chimpanzees and dogs. After confirming additional occurrences of intraspecific contagious yawning in a group of captive African elephants previously studied, we further investigated the potential for the same group of elephants to engage in interspecific contagious yawning with familiar human handlers. Ten captive African elephants, most of whom had been previously studied, were observed over 13 nights for evidence of intraspecific contagious yawning. Seven of these elephants were also involved in trials where familiar handlers performed

SUBMITTER: Rossman ZT 

PROVIDER: S-EPMC7225334 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature