For the past two mornings I've heard wild things screaming in my backyard at 5am. It's two hours before sunrise. What are those weird sounds?
Raccoons! And they're fighting!
I didn't go outdoors to record them but I found two videos that include the sounds -- above in Toronto, below on someone's roof.
Why are raccoons fighting in my backyard? I believe it's the watering hole effect. It's been very dry in Pittsburgh so my birdbath is one of the few sources of water. All the animals come for a drink before their bedtime and BAM!
A word to the wise: Don't go outdoors to visit the raccoons. They may have rabies.
(videos from YouTube; click on the YouTube logo on each one to see its original)