This week has been an interesting one in the weird, wild world of animal news:
- The world is on the brink of the sixth great extinction, a new study says.
- The "radical animal rights movement" has a new foe.
- The world's largest no-kill cat sanctuary has saved more than 20,000 feline friends.
- A den of wolf pups was rescued from a fire in Alaska's Kenai National Wildlife Refuge.
Take a look at some of this week's most stunning animal photos below, and check back next week for more news about the Animal Kingdom.
Animal Photos Of The Week