One of the cool things about aging as a topic of interest is that it has so many interesting nooks and crannies.
Consider the biology of the toothed-whale.
It is specifically among great apes and toothed whales that menopause and post-reproductive helping have evolved”
Rufus Johnstone and Michael Cant
Dr Johnstone, who is an evolutionary biologist based at the University of Cambridge, told BBC News: “It’s easy to forget about the cetaceans, but since they’re the only other mammal apart from us [where females] have a comparable post-reproductive lifespan, it’s important to study them in this context.”
The “grandmother hypothesis” was first proposed in the 1950s. It stated that menopause, which stops a female’s fertility well before the end of her lifespan, may have evolved to benefit a social group, because grandmothers went on to play such an important a role in caring for offspring that were already born.
The only remaining question is: “Do grandmother whales have cute pet names for their grandkids?”