Preliminary observations of an unusual mouth interaction between beluga calves (Delphinapterus leucas)

Although many animals, including odontocetes, exhibit interactions involving mouths (e.g., mouthing, nuzzling, biting), a limited number of animals display mouth‐to‐mouth social interactions that involve mutual coordination and collaboration. The purpose of this paper is to describe briefly a spontaneous and unexpected mouth‐to‐mouth social interaction between beluga calves in human care during their first year of life. Forty‐seven independent...