We may think we know everything there is to know about monsoon season, but there's always something new and interesting to discover with each rainstorm.
One thing you may have noticed are the unique sounds we hear this time of year.
Sure, we have roaring thunder, the pitter patter of rain and the occasional sound of water sloshing down our typically dry rivers. But what about wildlife?
Specifically toads.
According to Sandy Reith, a retired environmental educator for Pima County Natural Resources Parks and Recreation, your backyard might be erupting with a symphony of amphibianoic sound.
And depending on the type of toad near your home, you may hear something completely different from the next neighborhood over.
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See if you can tell the difference by taking our monsoon sounds challenge. Play the sounds below and then click or tap the links to reveal the type of toad.
The 
The Red-spotted Toad, emerges at dusk and walks to a nearby water source to feed and/or breed. During territorial disputes, breeding males engage in wrestling matches. The Red-spotted Toad can tolerate a 40% loss in body water. Its call is a high trill that lasts up to 10 seconds. (Amphibians and Reptiles of Arizona) 
The Sonoran Green Toad spends most of its life underground, emerging during the summer rains. The parotoid (poison) glands are large and oval-shaped. The Sonoran Green Toad has been reported to live more than 17 years in captivity. Its call sounds like insects buzzing. Please include the name of the photographer (Photo by Randy Babb, AZ Game and Fish Department). 
