A study examines the effects of a high-sugar diet on the lifespan of fruit flies. Another studies how the flies’ appetite-suppressing pathways may be similar to ours. Karen Hopkin reports.
Competition between older female orcas and their adult daughters when they can breed simultaneously may cause the matriarch to enter menopause.
A model of the dolphin vocal apparatus shows that they need a coating of mucus to produce their distinctive sounds.
A genetic analysis of leftovers from an exotic dinner in 1951 reveals that the diners got less than they were promised.
The call of the tufted titmouse conveys important information about the presence of potential predators. But only if other birds can hear it. Karen Hopkin reports.
Over their lifetimes, macaques follow the same trajectory as humans in the amount of interest they have in observing what another individual is looking at.
Male lemurs mix their scented secretions to send long-lasting messages to one another.
A lizard's stripes may make them look like they’re moving slower than they really are, confusing predators that tend to aim at the head but may wind up with the tail.
In mice, intestinal microbes respond to a high-fat diet by producing acetate, which triggers the release of a hormone that makes mammals feel hungry, causing them to eat even more.
When a shy fish ventures into the unknown, it prefers to follow a fish with a similarly cautious personality.
Shy sticklebacks were more likely to emerge from under cover when an equally wary fellow was already out there, rather than when a bold individual was present.
Many red-colored birds have to convert yellow pigments in their food into the red pigments that make their feathers and beaks so brilliant.
Lemurs sometimes mix their smelly secretions to produce a bouquet of stank—which may boost the perfume’s staying power. Karen Hopkin reports.
An individual's unique brain response to images of a celebrity and a food could be used to create an ID procedure at high-security sites.
Mountain-climbing bears transport cherry tree seeds, internally at first, to cooler, higher altitudes where the trees can survive as temperatures rise.
Researchers have uncovered the chemistry that makes the urine of bearcats smell like freshly cooked popcorn.
About 47,000 years ago, newcomer humans to Australia helped to wipe out an enormous flightless bird by collecting and cooking its eggs.
A public health advocate determined how much exercise is required to burn off various typical big game foods.
Bears’ gut summer bacteria are more diverse and include species that tend to promote energy storage than are the bacteria that live in them during their hibernation.
When food is plentiful and chimps are more chummy, they harbor an increased number of different bacterial species in their bellies.