Some puppies seem to know how to ask for a person’s help at just 6 weeks old, by repeatedly alternating their gaze between a human and the situation they are struggling with.
That is even younger than when babies start communicating that way, when adjusting for differences in how the two species mature, says Stefanie Riemer at the University of Veterinary Medicine Vienna in Austria. Babies generally start meaningfully alternating their gazes at between 8 and 10 months old.