As 2017 draws to a close, we’ve been tallying the year’s most eye‑opening breakthroughs—from ancient artifacts to distant galaxies. Now let’s dive into the animal kingdom and spotlight ten truly incredible animal discoveries that reshaped science.
Why These Incredible Animal Findings Matter
Each of these revelations not only deepens our understanding of how diverse life works, but also hints at practical applications—from bio‑inspired engineering to medical breakthroughs. Buckle up; the wild just got wilder.
10 Chimps Can Learn to Play Rock, Paper, Scissors
A Japanese research team at Kyoto University’s Primate Research Institute showed that our close primate relatives can pick up the rules of rock, paper, scissors. Seven chimps of various ages and sexes were pitted against a control group of 38 three‑ to six‑year‑old children. Rather than playing against each other, the apes faced a touchscreen displaying two hand gestures and had to select the winning one.
The chimps eventually learned the winning combinations, but they lagged behind the kids, who typically corrected a mistake after a single error. Scissors versus paper proved especially tricky for the apes. The researchers now aim to teach the chimps to compete against one another, narrowing the gap between human and non‑human cognition.
9 Scientists Discover the Hidden City of Octlantis
Octopuses are famed for their solitary habits, but divers off Jervis Bay, south of Sydney, uncovered a bustling underwater neighborhood dubbed Octlantis. Roughly two dozen rock‑ and shell‑lined dens were clustered together, with the cephalopods seen communicating, sharing space, and even squabbling when one got too close to another’s den.
While octopuses already rank among the smartest animals, this communal arrangement challenges the long‑standing view of them as loners. The behavior may be driven by predator protection or richer food sources. Octlantis follows a 2009 discovery of Octopolis, another octopus community that formed around a man‑made metal structure, reinforcing the idea that these mollusks are far more social than previously thought.
8 Marine Biologists Find the Spider‑Man Snail
A new marine snail, Thylacodes vandyensis, earned the nickname “Spider‑Man snail” for its ability to shoot mucus webs. Discovered on an artificial reef built from the USNS General Hoyt S. Vanderberg (a.k.a. the Vandy), the snail’s enormous slime glands produce a sticky filament that it fires with tiny tentacles to snare microscopic prey.
The web not only captures microorganisms for filter‑feeding—much like baleen whales—but also seems to deter predators, as nearby fish steer clear of the snail’s tubes. The dual function of capture and protection makes this worm‑snail a fascinating example of nature’s ingenuity.
7 Naked Mole‑Rats Have Plant‑Like Ability
Naked mole‑rats already astonish scientists with their 30‑plus‑year lifespans and cancer resistance. In 2017 researchers added another surprise: these rodents can survive 18 minutes without oxygen by borrowing a trick from plants.
Unlike most mammals, which rely on glucose, naked mole‑rats metabolize fructose—a sugar that can be broken down with minimal oxygen. A transporter protein called GLUT5, usually confined to liver and kidney, is spread throughout their bodies, allowing fructose to fuel vital organs like the heart and brain during oxygen‑deprived episodes.
6 Fire Ants Build Their Own Eiffel Tower
A Georgia Tech study revealed that fire ants can assemble towering structures using only their bodies. Starting with a wide base, each ant seeks a spot to fill; if the growing tower becomes too cramped, ants abandon the unstable section, causing it to collapse. The process repeats until the formation distributes weight evenly, resulting in a slender, Eiffel‑tower‑resembling column a few inches tall.
This self‑organizing behavior mirrors earlier findings that fire ants can form waterproof rafts lasting months. Understanding these simple rules could eventually guide the programming of robotic swarms that build and adapt without central control.
5 Tuna Fish Improve Speed and Maneuverability Using Hydraulics
Bluefin tuna, apex predators of the open ocean, can sprint past 70 km/h (45 mph). Scientists uncovered a unique hydraulic system that powers a pair of sickle‑shaped dorsal and anal fins. Lymph fluid pumped into channels beneath the fins stiffens them for high‑speed stability, while reduced pressure lets the fins fold for agile turns at slower speeds.
First observed at Monterey Bay Aquarium and later confirmed at Stanford, this vertebrate‑only hydraulic mechanism could inspire faster, more efficient underwater robots.
4 Dragonfly Wings Rip Bacteria Apart
Researchers seeking antimicrobial surfaces have long looked to nanotechnology, yet dragonfly wings already achieve the same effect. Their wing surface resembles a “bed of nails” at the nanoscale. Bacteria first adhere to these pillars using extracellular polymeric substances (EPS). When the microbe tries to move, the shear force on the EPS tears the cell membrane apart.
The natural pillars vary in height, unlike uniform lab‑made nanopillars, potentially offering a more versatile bactericidal design. Future studies will test a broader range of microbes to confirm whether engineers can safely copy this bio‑inspired weapon.
3 Paleontologists Found an Amphibian Missing Link
Two Triassic fossils have been identified as the oldest relatives of modern caecilians, the limbless, worm‑like amphibians that dwell underground in Africa, Central and South America. Named Chinlestegophis jenkinsi, these specimens bridge the gap between the bizarre Stereospondyli of the Late Permian‑Triassic and today’s caecilians.
Previously thought to be an evolutionary dead‑end, Stereospondyli now appear to have given rise to at least one extant lineage, pushing the amphibian family tree back about 315 million years. The discovery forces paleontologists to rewrite textbooks on amphibian evolution.
2 Scientists Uncover Tardigrade Super Gene
Tardigrades, the microscopic “water bears,” can survive extreme dehydration thanks to a newly identified gene. When dry conditions trigger the gene, it produces proteins that replace missing cellular water, allowing the animal to remain viable for years until rehydrated.
This insight could translate to real‑world benefits, such as storing vaccines without refrigeration. The study also shed light on tardigrade phylogeny: they lack five HOX genes that most animals possess, aligning them more closely with roundworms than with insects or arachnids.
1 Monkeys Love Deer
Interspecies mating is rare, but Japanese macaques and sika deer broke the rule twice in 2017. The first incident, recorded on Yakushima Island, showed a male snow monkey attempting to mount two female deer. Researchers suggested “mate deprivation”—the monkey’s low rank limited his access to female conspecifics.
A second encounter in Osaka featured adolescent female macaques mounting stags, complete with pelvic thrusts, antler pulling, and tantrums when the deer walked away. While macaques and deer have a symbiotic relationship—monkeys ride the deer for grooming—their sexual interactions may signal a new behavioral trend.