13 February 2024
Some pet dogs retain their baby teeth, creating two rows that resemble the mouth of a shark. A new analysis shows that the condition is more prevalent in smaller breeds and obese dogs
20 July 2023
Commonly recommended ways to boost our mood – which can also include expressing gratitude or spending time in nature – are often based on small, poorly designed studies
12 July 2023
An analysis of bones from the La Brea tar pits in California reveals that sabre-toothed tigers and dire wolves had very high rates of osteochondrosis, which may stem from a dwindling gene pool as they neared extinction
10 July 2023
Almost three-quarters of male macaques observed by scientists mounted other males, and the behaviour may help to strengthen alliances
7 July 2023
Jaguar attacks on pets and farm animals are a common problem, but after developing a drug-induced stomach ache, the big cats seem to learn not to kill certain animals
30 June 2023
Some female black-spotted frogs croak when a male approaches, and it’s not a come-on – the signal seems to persuade males not to attempt coercive mating
19 June 2023
Extremely long necks probably helped ancient marine reptiles ambush prey in murky waters, but also made them easy targets for decapitation by predators
6 June 2023
An egg laid by a female American crocodile with no access to males developed into a fully formed fetus in the first known case of "virgin birth" in a crocodilian
17 May 2023
Plans etched into stone tablets depict vast hunting traps called desert kites built 9000 years ago, showing a mastery of geometry long before the invention of writing
17 May 2023
Equine sports are increasingly under fire from animal rights activists, but science should be the focus for those who demand changes to the likes of horseracing and Olympic events, says Christa Lesté-Lasserre
