Figure 3.

Odour exposure elicits odour preferences. Mean (± s.e.m.) proportion of time during a 3 min preference test that pups spent investigating the cherry- and mint-flavoured pellets. Pups that had not been exposed to either flavour showed no preference (grey bars). Pups whose mothers had eaten a flavoured diet (cherry for M71s; mint for M72s) during gestation, nursing or both significantly preferred the flavour their mother ate (dark grey bars) to the novel flavour—mint for M71s; cherry for M72s (light grey bars).