What does it mean when a snow leopard, important to species survival, is deemed effectively sterile? That was the topic of conversation at the Louisville Zoo last week after a reproductive assessment ...

If you've ever had a spiny leaf insect as a pet, or you're considering getting one, hopefully someone has warned you about this: if you put one in your enclosure, you might come back some time later ...

In times of desperation, female sawtooth sharks have been known to reproduce sans males. For other species, solo reproduction is downright vanilla. blickwinkel / Alamy When it comes to getting ...