Beyond merely resembling human behavior, the finding seems to speak to the loyalty - and even the capacity for unconditional love - among non-human animals. It's pulling on the heartstrings of people all across the world.
"It appears they have more sympathy than some humans," one commenter wrote on Facebook.
Another added: "Humans could learn something here."
And some were surprised that such a finding is surprising at all. "We always seem surprised when animals show care and kindness," one commenter wrote. "But the internet is awash with evidence that far from extraordinary this sort of thing is common."