Jane Goodall Forever Changed Our Understanding Of Animals

Goodall spent the better part of seven decades with the chimpanzees of Tanzania. Her discoveries were so profound, they forced the scientific community to reevaluate what separates humanity from other animals.

As I’m sure most of you have heard, Jane Goodall passed away Wednesday of natural causes. She was 91.

Goodall’s work was revolutionary and her career was extraordinary. It’s difficult to imagine now, but when Goodall first pitched camp in Tanzania’s Gombe Stream National Park in July of 1960, the scientific community knew virtually nothing about great apes.

Goodall wasn’t exactly welcomed with open arms. Being female and photogenic were the first two strikes against her in the eyes of the establishment.

She was self-taught, didn’t have a degree (she later earned a doctorate at Cambridge), and perhaps her biggest “sins” involved empathy and an attitude more buttoned-up scientists saw as anthropomorphizing the animals.

Goodall with a Gombe chimpanzee. Credit: Wikimedia Commons

Goodall gave the chimps names (a no-no at the time among scientists), carefully observed and recorded their family trees, worked out the obtuse — to human eyes– social hierarchy of primate troops, and witnessed behavior that no one had ever seen before.

She saw friendship, love and loyalty among the chimpanzees, witnessed a bitter war between the Gombe troop and a splinter group, followed families over generations, and saw one chimp die of a broken heart after his mother passed away. (I recommend Goodall’s 1990 book, Through A Window: Thirty Years With The Chimpanzees of Gombe, and the 2002 follow-up, My Life With Chimpanzees, for anyone who wants to read more.)

Her first major contribution, in October of 1960, not only fundamentally challenged our assumptions about animals, it forced us to change the way we regard our own species.

Goodall, observing the chimpanzees from a distance despite the rain that day, watched as a male she named David Graybeard repeatedly dipped blades of grass into the Earth. Curious, Goodall approached the site after Graybeard left, grabbed a few blades of grass and imitated what she’d seen the chimp doing.

She was astonished when she pulled the grass out and the strands were covered in termites. David Graybeard had been eating. He was using a tool to eat!

Goodall at Gombe in the early 1970s. The primatologist secured unprecedented access to the chimpanzees by gaining their trust. Credit: Wikimedia Commons

The discovery was huge because scientists believed tool use was, at the time, limited to mankind. We build and use tools, animals don’t, the thinking went.

When Goodall reported her findings to her mentor, anthropologist Louis Leakey, his prompt response indicated the gravity of her discovery: “Now we must redefine ‘tool,’ redefine ‘man,’ or accept chimpanzees as humans.”

Goodall never stopped working with the chimpanzees of Gombe, and today her formerly humble camp has become a permanent compound where researchers — all inspired by Goodall’s story — continue to study our genetic relatives.

But in her later years, Goodall became known for her activism just as much as her work as a scientist. She traveled constantly, engaging audiences on the subjects of animal conservation, respect for nature and understanding our place in the natural order. It’s a job that has become more necessary than ever as relentless human expansion, habitat fragmentation and human behavior push thousands of species toward extinction.

Credit: The Jane Goodall Institute

We lost Frans de Waal, the famous primatologist, in 2024. Now we’ve lost Goodall, and Sir David Attenborough is less than six months shy of his 100th birthday. We’re going to need people to pick up where they left off, and the job is much more difficult than it looks, requiring expertise, charisma and the ability to connect with audiences who know little about the subject matter.

But that’s a problem for another time. For now, let’s remember Jane and appreciate all she’s done over the span of an incredible life and career.

Study: Cats Use Facial Expressions To Reassure Each Other Everything’s Cool During Play Time

Once again, we’ve underestimated cats. There’s so much more to the ways in which they communicate than we realize.

We know cats use non-verbal signals to communicate with each other, but recent research suggests we may just be scratching the surface, glimpsing only a portion of the information that passes between our furry friends.

Cats “talk” to each other by the way they position their tails, whiskers and ears, in addition to their overall body language.

It turns out there’s more. A group of interdisciplinary scientists from universities in Kansas, Arkansas and Haifa, Israel, found cats also employ specific facial expressions, and rapidly mirror each other’s expressions during play time to signal they’ve got good intentions and aren’t going to hurt each other.

The study, which was given the yawn-inducing title “Computational investigation of the social function of domestic cat signals” (in English: using AI to figure out how our house cats “talk” to each other), started with observations of felines playing with each other in cat cafes.

From there, the coders and mathematicians on the team created an algorithm to record and sort the facial expressions the cafe cats used, employing CatFACS (Cat Facial Action Coding System) to associate each expression with its meaning.

“I’m serious. Feed me, or feel my wrath.”

Cats make a surprising number of facial expressions, 276 in total, according to a 2023 study.

The problem is, we humans are terrible at reading them. Even veterinarians trained in CatFACS still struggle to get it right, but happily this is precisely the sort of task algorithmic AI excels at. Like facial recognition software, a well-trained machine learning algorithm can recognize faces and record them more accurately and much faster than any person could.

In a column praising the facial expressions study, evolutionary biologist and Jane Goodall Foundation ethics board member Mark Bekoff said it’s the kind of labor-intensive work that truly advances our understanding of the ways animals communicate.

For cats and their human caretakers, Bekoff notes, it could help us reduce inter-species misunderstandings and make it easier to read our cat’s emotions, so we know when they’re not feeling well or need something.

“There are no substitutes for doing what’s needed to learn about the nitty-gritty details of how animals communicate with one another in different contexts,” Bekoff wrote. “This study of play opens the door for more widespread comparative research focusing on how animals talk to one another.”

“Do I look happy, human?” Credit: Milan Nykodym/Wikimedia Commons

We also know adult cats very rarely meow to each other, and the meow is reserved for cat-to-human communication. Imagine the frustration our little friends must feel when they have so much to tell us, but the only thing we understand are vocalizations — meows, chirps and trills — that can convey only basic ideas at best.