Tooth marks on a dinosaur skull provide evidence of intraspecific fights and postmortem scavenging, according to a study.

Use of a veterinary painkiller, banned in several countries because of its lethal effects on scavenging birds, has declined, but cow carcasses still test positive.

Regular supplies of food for scavenger birds in Spain may not be the most effective conservation strategy, as smaller birds are bullied away.

Death breeds life in the world’s most diverse and abundant group of animals.