Hedgehogs have up to 5000 short, yellow-tipped spines can cover their upper body, offering protection from predators. If they're disturbed they'll roll up into a ball so their soft underside is ...

Scientists have successfully genetically modified chickens to make their feathers resemble those of dinosaurs. This study is ...

Inhibiting the sonic hedgehog (Shh) pathway strongly perturbs feather development in chickens by restricting feather bud ...