Natural History Wanderings

Smithsonian Magazine reported

Human breast milk has long reigned as the most complex known mammal milk. But another species might dethrone us: gray seals.

In a study published November 25 in the journal Nature Communications, researchers analyzed gray seal milk and found around 33 percent more types of complex sugar molecules than in human breast milk, many of which were previously unknown. The findings could pave the way for new methods to support human health.

Read more The Mammal With the Most Complex Milk Might Not Be Humans, After All. The Atlantic Gray Seal Could Take That Title