Toads are simple enemies found in Phoenotopia. They're found mostly in forested areas like Duri Forest and Misty Gorge. However, there are a few wooden crates throughout the game that might have a Toad in them.
Toads attack just as you'd think they would: they hop. They can also swim. It's best to attack a Toad when it's not moving. When a Toad is defeated, it'll usually drop a few Rai, and sometimes it may drop a Toad Leg.
It's also worth noting that Toads, when hit with the Slingshot, stay stunned for far longer than most of the other enemies.