Genital parasite crabs are struggling to find sex partners
Parasitic crustaceans called castrator pea crabs spend most of their lives hiding in the sex organs of limpets, and that makes it difficult to find a mate
Great tits avoid bad food after seeing grossed-out friends
If a great tit eats something nasty, it will disgustedly wipe its beak on a branch – and other great tits watch and learn
This is the oldest fossil of a plesiosaur from the dinosaur era
A nearly complete skeleton of an early long-necked plesiosaur has been found in a clay pit in Germany, and reveals they survived a mass extinction
‘Scary’ spider photos on Facebook are revealing new species
When people see a big spider they often post a photo on Facebook – and those images have now revealed up to 30 new species
Record-breaking two-tonne fish is the heaviest of its kind
The record books say that the ocean sunfish is the heaviest bony fish alive, but in fact the specimen in question belongs to a different species
Japan’s refusal to stop ivory trade undermines bans elsewhere
Even though other countries are clamping down on illegal ivory, the unconstrained trade in Japan may offer loopholes for criminals to keep selling ivory – fuelling elephant poaching
Lizards re-evolved eggs after thousands of years of live births
It’s an evolutionary U-turn: a group of egg-laying lizards evolved from live-bearing ancestors, which are in turn descended from even older egg-layers
Sumatran tigers fall 17 per cent and have just two strongholds
There are now only two viable populations of Sumatran tigers left in the wild, so if the cats are to be saved those areas have to be protected
Male monkeys with masculine faces draw long lingering glances
Female monkeys spend more time staring at males that have highly masculine facial features, but we don’t know if they fancy them or fear them
Hummingbirds have massive hearts to power their hovering flight
Birds that hover in front of flowers have huge hearts to power their energy-intensive flight, and even birds that glide effortlessly need fairly big hearts to keep it up