"It is like finding a new fossil of a long-lost ancestor," researcher Chris Petkov said.
Traditionally, scientists thought Australopithecus' larger brain size meant it was smarter than modern great apes, but new research suggests that assumption is wrong.
"Florida woman" stories will now include a 33-year-old orangutan named Sandra who was granted legal personhood in 2015 and recently moved to Florida.
The Soviet Union launched a dog known as Laika into orbit on November 3, 1957.
"The birth of this male is great news for the species," senior zoo keeper Jane Marshall said.
Scientists also observed the chimps sharing the tortoise meat between individuals.
Using tools to dig for food underground was once thought to be a behavior unique to humans.
The four-legged creature from the Triassic period is the oldest species from the lineage that leads towards dinosaurs.
Panda numbers are on the rise, but humans are pushing our closest ape relatives to extinction.