Why some animals die after mating: Male antechinus, praying mantis, octopuses and more

For a small number of animals, reproduction marks a biological endpoint rather than a stage in an ongoing life cycle. Death ...

Highly venomous male octopuses poison females before sex — to avoid being eaten after mating, scientists say

It’s an octopus-eat-octopus world. Scientists have discovered that mating, male blue-lined octopuses will inject a powerful, ...