MAPT and Alzheimer disease: Two recent reports in cetaceans, one suggesting deep diving beaked whales are more susceptible to AD‐like pathology due to the hypoxia associated with their foraging activities (Sacchini et al., 2020) and a report of a single captive aged (40‐year‐old) bottlenose dolphin (Stylianaki et al., 2019), and one reporting the presence of Aβ and tau‐related pathology in the brains of aged pinnipeds (Takaichi et al., 2021) suggest these species require in‐depth investigation.