Isha and Oscar eat Sacoglottis fruit.
by Martyn Colbeck / Disney
“This primate tries in vain to catch a spider crawling on the outside of the glass.”
Photo and caption courtesy Andy Kenutis/National Geographic
Scientists have discovered that the tarsier is even stranger than we realized. Apparently, these tiny primates can send and receive ultrasonic calls, joining a select club of mammals with the same acoustic talent—namely, whales, dolphins, cats, rats and bats. Researchers already knew that tarsiers make at least 15 distinct calls—all of which are audible to people—but until now no one had good evidence that they also communicate with ultrasonic shrieks, although some scientists guessed they might.