Animals

Mammals dream about the world they are entering even before birth
Elephant tusk DNA is used to expose poaching networks
Fossil of oldest octopus and vampire squid relative may reveal 10-armed past
New children’s malaria treatment clears out infection in liver
Digital sound archives can bring extinct birds (briefly) back to life
Pregnant dolphins identified by drones for the first time
New breed of pig will provide organs for human transplantation 
Hibernating squirrels hint at secret to surviving space travel
“BioDome” triggers near-complete limb regeneration in frogs
Green lights reduce bycatch in fishing nets by 63%